<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.element14.com/cfs-file/__key/system/syndication/atom.xsl" media="screen"?><feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en-US"><title type="html">Blog</title><subtitle type="html" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/atom</id><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog" /><link rel="self" type="application/atom+xml" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/atom" /><generator uri="http://telligent.com" version="12.1.9.35025">Telligent Community (Build: 12.1.9.35025)</generator><updated>2020-07-18T16:35:00Z</updated><entry><title>DIY OHM-METER &amp; VERIFYING WHEATSTONE BRIDGE CONDITION</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/diy-ohm-meter-verifying-wheatstone-bridge-condition" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/diy-ohm-meter-verifying-wheatstone-bridge-condition</id><published>2020-09-15T06:47:08Z</published><updated>2020-09-15T06:47:08Z</updated><content type="html">IntroductionIn Engineering resistors one of the very common and one of the most essential components which are very widely used. The resistances of through-hole resistors can be calculated using colour code, while for other components and SMT compone...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/diy-ohm-meter-verifying-wheatstone-bridge-condition"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9877&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>aabhas</name><uri>https://community.element14.com/members/aabhas</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="aabhassenapati" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/aabhassenapati" /><category term="project14" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/project14" /></entry><entry><title>Radioactivity fun!</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/radioactivity-fun" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/radioactivity-fun</id><published>2020-09-15T04:32:48Z</published><updated>2020-09-15T04:32:48Z</updated><content type="html">
&lt;a class="jive-link-anchor-small" href="#jive_content_id_Introduction"&gt;Introduction&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_The_Geiger_counter_setup"&gt;The Geiger counter setup&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_Background_radiation"&gt;Background radiation&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_Radiation_distance"&gt;Radiation distance&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_Radiation_blocking"&gt;Radiation blocking&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_Final_words"&gt;Final words&lt;/a&gt;

Introduction&amp;nbsp;Radioactive decay is the process where unstable atoms lose energy through emission of ionizing radiation in the...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/radioactivity-fun"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9837&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>neuromodulator</name><uri>https://community.element14.com/members/neuromodulator</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Voltage Drop Bonus Content</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltage-drop-bonus-content" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltage-drop-bonus-content</id><published>2020-09-14T21:05:27Z</published><updated>2020-09-14T21:05:27Z</updated><content type="html">This blog is not an entry for the Proving Science challenge - but it does demonstrate Ohm&amp;#39;s Law in action.&amp;nbsp; Proving Science seems like the best place to put it.&amp;nbsp;E=IR&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; In a different blog, I added extension cords t...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltage-drop-bonus-content"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9875&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>kmikemoo</name><uri>https://community.element14.com/members/kmikemoo</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Laser Microscope Experiment</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/laser-microscope-experiment" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/laser-microscope-experiment</id><published>2020-09-14T07:49:31Z</published><updated>2020-09-14T07:49:31Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;LASER stands for Light Amplification by Stim...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/laser-microscope-experiment"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9869&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>vishwasn</name><uri>https://community.element14.com/members/vishwasn</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Where Did My Volts Go?</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/where-did-my-volts-go" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/where-did-my-volts-go</id><published>2020-09-14T02:34:00Z</published><updated>2020-09-14T02:34:00Z</updated><content type="html">
What&amp;#39;s not to love about seeing science in action?&amp;nbsp; We can&amp;#39;t always see the actual event but we can see the results.&amp;nbsp; In troubleshooting, I call them symptoms, because the event we can measure or observe isn&amp;#39;t the root cause.
&amp;nbsp;
I also...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/where-did-my-volts-go"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9866&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>kmikemoo</name><uri>https://community.element14.com/members/kmikemoo</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Fire Extinguisher Car</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/fire-extinguisher-car" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/fire-extinguisher-car</id><published>2020-09-11T13:45:57Z</published><updated>2020-09-11T13:45:57Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;Hello Everyone,My name is Harji Nagi.I am cu...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/fire-extinguisher-car"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9857&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>harjinagi</name><uri>https://community.element14.com/members/harjinagi</uri></author><category term="controlsystemsch" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/controlsystemsch" /><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="science" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/science" /></entry><entry><title>The Planck Constant and the Relationship of Frequency to Photon Energy</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-planck-constant-and-the-relationship-of-frequency-to-photon-energy" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-planck-constant-and-the-relationship-of-frequency-to-photon-energy</id><published>2020-09-05T22:10:00Z</published><updated>2020-09-05T22:10:00Z</updated><content type="html">
The Planck Constant and the Relationship of Frequency to Photon Energy
by Frank Milburn
&amp;nbsp;
I have revisited a subject I first explored in 2017 using LEDs to determine the value of the Planck constant.&amp;nbsp; The method used is one that seems to b...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-planck-constant-and-the-relationship-of-frequency-to-photon-energy"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9815&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>fmilburn</name><uri>https://community.element14.com/members/fmilburn</uri></author><category term="planck&amp;#39;s constant" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/planck_26002300_39_3B00_s%2bconstant" /><category term="spectroscopy" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/spectroscopy" /><category term="quantum mechanics" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/quantum%2bmechanics" /><category term="planck" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/planck" /><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="led" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/led" /><category term="spectroscope" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/spectroscope" /></entry><entry><title>TempMeter#2 : Improved Accuracy by Using a Laser Poiter</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-2-improved-accuracy-by-using-a-laser-poiter" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-2-improved-accuracy-by-using-a-laser-poiter</id><published>2020-08-19T16:06:33Z</published><updated>2020-08-19T16:06:33Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;Although my original Tempmeter (&lt;a class="jive-link-blog-small" href="/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-measuring-temperature-with-a-brass-rod"&gt;TempMeter : ...&lt;/a&gt;(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-2-improved-accuracy-by-using-a-laser-poiter"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9755&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>dubbie</name><uri>https://community.element14.com/members/dubbie</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="temperature meter" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/temperature%2bmeter" /><category term="mirror" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/mirror" /></entry><entry><title>Calorie Meter and Activity Tracker</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/calorie-meter-and-activity-tracker" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/calorie-meter-and-activity-tracker</id><published>2020-08-10T20:43:45Z</published><updated>2020-08-10T20:43:45Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;&lt;a href="https://community.element14.com/resized-image/__size/426x900/__key/communityserver-blogs-components-weblogfiles/00-00-00-02-68/6471.contentimage_5F00_141627.jpg"&gt;&lt;/a&gt;Hello&amp;nbsp; Everyone,My name is Harji Nagi.I...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/calorie-meter-and-activity-tracker"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9717&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>harjinagi</name><uri>https://community.element14.com/members/harjinagi</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>TempMeter : Measuring Temperature with a Brass Rod</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-measuring-temperature-with-a-brass-rod" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-measuring-temperature-with-a-brass-rod</id><published>2020-08-07T13:53:46Z</published><updated>2020-08-07T13:53:46Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;For the Proving Science Project14 activity I...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/tempmeter-measuring-temperature-with-a-brass-rod"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9704&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>dubbie</name><uri>https://community.element14.com/members/dubbie</uri></author><category term="temperature measurement" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/temperature%2bmeasurement" /><category term="brass rod" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/brass%2brod" /><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>The Fast Chain Problem - Arduino Laser Gates</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-fast-chain-problem---arduino-laser-gates" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-fast-chain-problem---arduino-laser-gates</id><published>2020-08-02T20:51:00Z</published><updated>2020-08-02T20:51:00Z</updated><content type="html">
THE FAST CHAIN PROBLEM - ARDUINO LASER GATES



&lt;a class="jive-link-anchor-small" href="#jive_content_id_1_Introduction"&gt;1. Introduction&lt;/a&gt;

&lt;a class="jive-link-anchor-small" href="#jive_content_id_Story"&gt;Story&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_What_is_IYPT"&gt;What is IYPT?&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_2_Problem"&gt;2. Problem&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_3_Theory"&gt;3. Theory&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_4_Experiment"&gt;4. Experiment&lt;/a&gt;

&lt;a class="jive-link-anchor-small" href="#jive_content_id_Idea"&gt;Idea&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_Build"&gt;Build&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_Software"&gt;Software&lt;/a&gt;


&lt;a class="jive-link-anchor-small" href="#jive_content_id_5_Tests"&gt;5. Tests&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_6_Results__Analysis"&gt;6. Results &amp;amp; Analysis&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_7_Upgrade_Ideas"&gt;7. Upgrade Ideas&lt;/a&gt;
&lt;a class="jive-link-anchor-small" href="#jive_content_id_8_Summary"&gt;8. Summary&lt;/a&gt;



&amp;nbsp;
1. Introduction
&amp;nbsp;&amp;nbsp;&amp;amp;nb...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/the-fast-chain-problem---arduino-laser-gates"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9672&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>milosrasic98</name><uri>https://community.element14.com/members/milosrasic98</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Measuring the speed of sound</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/measuring-the-speed-of-sound" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/measuring-the-speed-of-sound</id><published>2020-08-02T13:29:00Z</published><updated>2020-08-02T13:29:00Z</updated><content type="html">
&lt;a href="https://community.element14.com/resized-image/__size/1200x900/__key/communityserver-blogs-components-weblogfiles/00-00-00-02-68/2043.contentimage_5F00_141515.jpg"&gt;&lt;/a&gt;
Basic concept is to measure the speed of the sound using echoes and with the microphone build in notebook.
&amp;nbsp;
Apparatus and materials:
1. Notebook or device with microphone,
2. Sound editor e.g. Audacity
3. Paper or other material tube with kno...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/measuring-the-speed-of-sound"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9680&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>kk99</name><uri>https://community.element14.com/members/kk99</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="science" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/science" /><category term="speed of sound" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/speed%2bof%2bsound" /><category term="audacity" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/audacity" /></entry><entry><title>Voltmeter 4*Reading</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltmeter-4-reading" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltmeter-4-reading</id><published>2020-07-31T21:29:42Z</published><updated>2020-07-31T21:29:42Z</updated><content type="html">&lt;a href="/challengesprojects/project14/"&gt;&lt;/a&gt;&lt;a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/project14/provingscience/"&gt;Proving Science&lt;/a&gt;Enter Your Electronics &amp;amp; Design Project for a chance to win a $200 shopping cart!&lt;a class="" href="https://www.element14.com/community/blog/create-post!input.jspa?containerType=37&amp;amp;containerID=17978&amp;amp;tags=provingsciencech" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a class="" href="https://www.element14.com/community/create-account.jspa?ICID=p14DCH-nanorama-doc" title="Submit an Entry"&gt;Submit an Entry&lt;/a&gt;&lt;a href="/challengesprojects/project14/"&gt;&amp;nbsp; Back to homepage &lt;/a&gt;&lt;a class="jive-link-community-small" href="/challengesprojects/project14/"&gt;Project14 Home&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/3370/project14-project-competition-events-trophies-timetable-projected-and-historical-timelines"&gt;Monthly Themes&lt;/a&gt;&lt;a class="jive-link-wiki-small" href="/challenges-projects/project14/w/documents/20670/project14-you-decide-the-next-monthly-project-competition"&gt;Monthly Theme Poll&lt;/a&gt;&amp;nbsp;I made a dc voltmeter which displays four di...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/voltmeter-4-reading"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9673&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>harjinagi</name><uri>https://community.element14.com/members/harjinagi</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry><entry><title>Electric Hula Hoop</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/electric-hula-hoop" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/electric-hula-hoop</id><published>2020-07-30T05:45:00Z</published><updated>2020-07-30T05:45:00Z</updated><content type="html">
The Problem
How can we make a hula hoop automatically go up a straight vertical pole?
The problem sounds simple, people have been playing with hula hoops for many decades making them go up and down their bodies. However, when it is a straight vertic...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/electric-hula-hoop"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9664&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>dougw</name><uri>https://community.element14.com/members/dougw</uri></author><category term="friction" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/friction" /><category term="doug wong" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/doug%2bwong" /><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /><category term="optocoupler" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/optocoupler" /><category term="unconstrained toothless planetary gear" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/unconstrained%2btoothless%2bplanetary%2bgear" /><category term="electric hula hoop" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/electric%2bhula%2bhoop" /><category term="involute gear" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/involute%2bgear" /><category term="hula hoop" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/hula%2bhoop" /></entry><entry><title>Experimenting with AC Current Sensing</title><link rel="alternate" type="text/html" href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/experimenting-with-ac-current-sensing" /><id>https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/experimenting-with-ac-current-sensing</id><published>2020-07-18T21:35:00Z</published><updated>2020-07-18T21:35:00Z</updated><content type="html">
After watching James Lewis&amp;#39; Work Bench Wednesday presentation a couple weeks ago on Clamp Meters and sensing current 
&amp;nbsp;
&lt;a class="jive-link-wiki-small" href="/challenges-projects/element14-presents/workbenchwednesdays/w/documents/4897/workbench-wednesday-24-no-contact-current-measurements"&gt;Workbench Wednesday 24: No-Contact Current Measurements&lt;/a&gt;
&amp;nbsp;
and reading some of the comments I decided that it would be f...(&lt;a href="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/posts/experimenting-with-ac-current-sensing"&gt;read more&lt;/a&gt;)&lt;img src="https://community.element14.com/aggbug?PostID=9624&amp;AppID=268&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</content><author><name>jw0752</name><uri>https://community.element14.com/members/jw0752</uri></author><category term="provingsciencech" scheme="https://community.element14.com/challenges-projects/project14/provingscience/b/blog/archive/tags/provingsciencech" /></entry></feed>