Documents

migration.user — Fri, 01 Oct 2021 18:14:52 GMT

Current Revision posted to Documents by migration.user on 10/1/2021 6:14:52 PM

Project14 | Winners Announcement: Proving Science: From Experiments to Scientific Apparatuses!

tariq.ahmad — Thu, 08 Oct 2020 19:03:15 GMT

Current Revision posted to Documents by tariq.ahmad on 10/8/2020 7:03:15 PM

Proving Science

Enter Your Electronics & Design Project for a chance to win a $200 shopping cart!

Submit an EntrySubmit an Entry Back to homepage

Project14 Home

Monthly Themes

Monthly Theme Poll

Congratulations to kmikemoo for Where Did My Volts Go? ! You are the winner of a $200 Shopping Cart and earn the Grand Prize Trophy Badge!

Congratulations to milosrasic98 for The Fast Chain Problem - Arduino Laser Gates, fmilburn for The Planck Constant and the Relationship of Frequency to Photon Energy, and dougw for Electric Hula Hoop ! You are the First Place winners of the $100 Shopping Cart and earn First Place Trophies!

The idea for the Proving Science competition was to build a science apparatus, a measuring device or a project that demonstrates a principle of science. This project competition was a good opportunity to demonstrate solid engineering work through objective experimentation. After all, some of the most paradigm shifting scientific discoveries began with the invention of products made by engineers. The impressive list of famous scientists who were engineers include heroes such as James Clerk Maxwell, Leonardo Di Vinci, Charles Babbage, Hedy Lamar, Michael Faraday, and so many more.

Winning projects included attempts to demonstrate Ohm's Laws, Plank's constant, the Laws of Gravity and a "Mythbusters" project in tribute to the late Grant Imahara who passed away weeks before the project blog was posted. Runners up included a project that experimented with AC Current Sensing, measuring the speed of sound, and Radioactivity fun!

Without further Ado here are your winners.......

{tabbedtable} Tab Label

Tab Content

The Winners

Grand Prize:

Where Did My Volts Go? by kmikemoo:

Voltage Drop Bonus Content

Community Member Scoring:

Grand Prize: 2 points, First Place: 3 point Total Points: 5 Points

kmikemoo decided to "prove" Ohms Law through demonstrating voltage drop. When it comes to proving science kmikemoo loves those things that prove Ohm's Law. His personal favorite is line loss or voltage drop. This demonstration grew out of a real world application issue with a poke motor and a job site generator. He gets started with his 1500 watt load bank and utility power. In the video demonstration, watch the voltage on the yellow multimeter to see the voltage difference across test bed as the equivalent conductor size gets smaller and smaller. Some interesting observations are that the circuit current does not change very much at all and the significant change in voltage across the test bed towards the end. It could even be exponential - as in like,.. I², The voltage drop shows that even very small changes in the resistance of your supply lines can have an impact on the power the connected load receives.

Where Did My Volts Go?

players.brightcove.net/.../index.html

First Place Winners:

The Fast Chain Problem - Arduino Laser Gates by milosrasic98:

Community Member Scoring:

Grand Prize: 2 points First Place: 2 Points Total Points: 4 Points

For this project milosrasic98 had to design an apparatus for proving a physical phenomenon which he describes in his blog. This was the project where he fell in love with electronics. A lot of my design, as you will see through his blogs, were influenced by his favorite show, which pushed him into direction of science and electronics, Mythbusters. This project is a tribute to Grant Imahara, who passed a few weeks before this was published, at a very young age. This project was done when he was in high school, after getting the Arduino Starter Kit, as part of an IYPT competition. IYPT is a competition that mixes science with an experimental approach instead of just the usual theory. He was lucky enough to be part of the Serbian team which went to Singapore for the 30th IYPT competition. The problem he had to solve:

A small amount of a ferrofluid placed in an inhomogeneous magnetic field forms hilllike structures. Investigate how the properties of these structures depend on relevant parameters.

The Fast Chain Problem - Arduino Laser Gates

www.youtube.com/watch

The Planck Constant and the Relationship of Frequency to Photon Energy by fmilburn:

Community Member Scoring:

Grand Prize: 2 points First Place: 2 points Total Points: 4 Points

fmilburn revisits a subject he first explored in 2017 using LEDs to determine the value of the Planck constant. The method used is one that seems to be in wide use among undergraduate physics students these days. In this post it is explored further and this time the light frequency will be measured experimentally as well as the energy of the LEDs in the calculation of the Planck constant. Last time he achieved a result that differed from the accepted value by 11%. Can he do better this time?

The Planck constant is the quantum amount that relates a photon's energy to its frequency and is a fundamental physical constant of quantum mechanics. The origin of the constant was a formulation by Max Planck as a mathematical expression to predict the spectral distribution of thermal radiation from a black body. Albert Einstein formally described the effect of light quanta in a 1905 paper on the photoelectric effect which would eventually win the 1921 Nobel Prize. The relationship of photon energy E, photon frequency f, and the Planck constant, h is known as the Einstein Planck equation and is shown below:

E = hf (1)

This can also be written as E = h c/λ where c is the speed of light and λ is the wavelength.

The Planck Constant and the Relationship of Frequency to Photon Energy

www.youtube.com/watch

Electric Hula Hoop by dougw:

Community Member Scoring:

Grand Prize: 2 points First Place: 1 points Total Points: 3 Points

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 vertical pole instead of a gyrating human body, a whole new method needs to be developed.

This blog demonstrates a fairly non-intuitive solution to this problem - the resulting machine will make a hula hoop go up a straight vertical pole.

This blog is also probably the only place you will learn about the secret sauce that makes this type of hula hoop work.

This technology uses lots of scientific and engineering principles but there is no physics or engineering textbook that describes how such a device works. The problem must be solved from first principles. The main issue of course is how to impart a vertical force to a free-wheeling hoop to overcome the force of gravity which is always tending to pull the hoop down.

This device uses an electric motor to spin everything, so there is lots of power available, but how can we translate that rotary power into vertical force on a hoop that is not connected to the motor.

You may want to think up your own theories before reading further and you may want to watch it in action in the first video demo to see if the clues there are sufficient to figure out how this particular device works.

Electric Hula Hoop

www.youtube.com/watch

The Runners Up

Runners Up:

The following members received first place votes.

Experimenting with AC Current Sensing by jw0752 :

Experimenting with AC Current Sensing

players.brightcove.net/.../index.html

Measuring the speed of sound by kk99:

Measuring the speed of sound

players.brightcove.net/.../index.html

Calorie Meter and Activity Tracker by harjinagi:

Calorie Meter and Activity Tracker

www.youtube.com/watch

Radioactivity fun! by neuromodulator:

Radioactivity fun!

In the comments below:

Be sure to Congratulate the Winners and Keep Being Awesome!

Tags: provingsciencech, past_contest

Project14 | Proving Science: Build an Apparatus, a Measuring Device or Demonstrates a Principle of Science!

tariq.ahmad — Wed, 22 Jul 2020 15:13:15 GMT

Current Revision posted to Documents by tariq.ahmad on 7/22/2020 3:13:15 PM

Proving Science

Enter Your Electronics & Design Project for a chance to win a $200 shopping cart!

Submit an EntrySubmit an Entry Back to homepage

Project14 Home

Monthly Themes

Monthly Theme Poll

In the Comments Below: Let Us Know Your Proving Science Ideas!

Your Project Can Involve Anything from a Scientific Apparatus to Demonstrating a Scientific Principle!

Submit a Blog in or tag your post ProvingScienceCH for a Chance to Win!

Submit an EntrySubmit an Entry

The theme this month is Proving Science and it comes from a suggestion from neuromodulator . The idea is to build a science apparatus, a measuring device or a project that demonstrates a principle of science. Examples could be: an amplifier that can detect action potentials of neurons, a project that shows different properties of waves such as reflection, refraction or wave interference, or an instrument to measure different physical quantities such as mass, temperature, time, etc. In real life, science and engineering are not easily distinguished. Scientists wind up doing some engineering work while engineers apply processes that mirror a scientific framework. This project competition is a good opportunity to demonstrate solid engineering work through objective experimentation. You can focus on a scientific discipline such as electromagnetism, phonetics, acoustics, rf, renewable energy, and whatever interests you. Engineers are focused on products that solve a need, so this is also a good opportunity to build your own test instrumentation, and do so in the name of science.

Some of the most paradigm shifting scientific discoveries began with the invention of products made by engineers. The impressive list of famous scientists who were engineers include heroes such as James Clerk Maxwell, Leonardo Di Vinci, Charles Babbage, Hedy Lamar, Michael Faraday, and so many more. Your projects can involve either building a scientific apparatus or involve demonstrating a principle of science such as in an experiment of your choosing!

www.youtube.com/watch

Here are some past projects to help inspire you:

Flipping Core Memory Bits Directly With a Magnetic Stylus by abg123 :

abg123 has always been captivated by magnetism. His discovery of core memory at the Computer History museum in Mountain View, CA triggered the idea of creating a core memory module that is interactive. He discovered Jussi Kilpelainen’s Arduino Core Memory Shield on Tindie and that was the kick he needed. He added an LED array behind the cores to illuminate each core in real time and so he could selectively flip a bit one direction with a stylus (a small screwdriver with a magnet attached). He suspects the presence of the permanent magnet is inhibiting the “destructive read” and/or the follow-up write. The result is only being able to clear the bits at this time. The next step is to create an active stylus to allow him to choose whether he wants to set or clear a bit. This will effectively enable drawing AND erasing, to make the project more interactive. Pursuing this next step is going to bring along more learning about magnets and core memory, which is the real goal behind the project.

www.youtube.com/watch

Magnetostriction - Exploring one Application by jw0752

During the Electromagnetism competition, jw0752 did a little experiment involving the Magnetostrictive Phenomenon. Magnetostriction is a property of a ferromagnetic material whereby it changes shape when it is subjected to a magnetic field. Anyone who has worked with transformers is familiar with the low frequency 50 or 60 Hz hum that can usually be heard coming from the transformer. This is an undesirable magnetostrictive effect that is causing the hum and a subsequent loss of energy in the transformer. On the other hand if you have been to the dentist and had your teeth cleaned by a hygienist using a device called a Cavitron you may have also experienced a desirable magnetostrictive effect. Since he had many of the parts and pieces used in these dental Cavitrons it seemed like a good experiment to set up some parts for a little demonstration.

Salt water cell by kk99

During the Mixing Electronics & Water competition, kk99's idea was to create low power device with salt water cell as power supply. Here is example of salt water cell. For this he used two glass containers, two copper electrodes, and two silver electrodes. Voltage generated by these two cell was around 1.5 volt. In its current form the salt water cell was able to generate voltage around 1.7 volt and current around 4-5 uA. For this experiment its important to think about the proper material and shape of the electrodes.

www.youtube.com/watch

Caustic XMAS by neuromodulator

Caustics are the envelope of light rays through either refraction of reflection, that causes patterns of concentrated light. One example can be seen when light "statically" bends when it refracts in glass. Another example is can be seen when the pattern is dynamic as it is affected by the surface of water. Caustic patterns are notoriously visible when the light comes from a point source or is collimated, which is the reason why the sun generates sharp patterns when interacting with the water surface (when its not covered by clouds). neuromodulator has always been amazed by the way the light interacts with the environment, so for the Merry Boxes & LEDs competition his project was to play with some of these interactions to create an interesting XMAS light show.

www.youtube.com/watch

DIY Test Equipment: The Di-o-Matic, a Simple Diode Tester [Arduino] by jc2048

jc2048 has done a number of projects involving experiments on the element14 community. During the DIY Test Equipment competition, he created a Diode Tester. Operation was quite simple: He passes a current through the diode and measures the forward voltage across it. The current is controlled by the processor and the voltage read by the processor's ADC. He only intends it for signal diodes and LEDs, so the current will only go up to 50mA (it would be possible to adapt it for higher currents if you wanted to, but you'd have to look carefully at the power dissipation of the transistor). He relies on the person doing the test to get the diode the right way round and not try to sense and correct for that with the circuit. For the kind of diodes you'd test with this, they'd all stand 5V reverse voltage (the lowest are usually LEDs, but they are generally specced at 5V or 6V maximum reverse voltage).

Measuring nanoamps by koudelad

If you want to do Energy Harvesting , you also want the powered device consume as little power as possible. koudelad first bigger electronics project was "No lies" IR Thermometer. He had previously written a few blog posts about it’s goal and evolution. It is also his first battery powered micro-controller design and he still has much to learn how to improve this device. One thing he didn’t have time to optimize is battery life. The thermometer is used twice a week on average, to check body temperature etc. The rest the time it will be in low power mode, ready to be used.

Measuring Electromagnets - the Magneto Mutant Magnetic Measurement Meter (MMMMM-1000) by shabaz:

shabaz built this for anyone curious about magnetism and measuring it. This project would also be useful for school physics labs, since it is a lot cheaper to make than to buy a commercial tool (a few tens of $ USD). The project is simple to construct. It consists of a single-chip Hall-effect magnetic sensor, and it outputs a few millivolts per Gauss. Magnetic flux density is measured either in Gauss, or Tesla. A typical small magnet as found in earphones, may have a flux density of a few tens of milliTesla (10 Gauss is equal to 1 milliTesla). The output from the sensor is buffered using an op amp, and then read by an analog-to-digital converter (ADC) in a microcontroller, and output to an LCD screen. The microcontroller is an ST ARM Cortex-M0 part, on a compact development board called the NUCLEO-F031K6NUCLEO-F031K6.

www.youtube.com/watch

Your Chance to Win

Be Original	Stick to the Theme
You could come up with a clever name that make's your project memorable! This project is your baby! Part of the fun of bringing something new into the world is coming up with a name. Your project could introduce something new or that is not commercially available or affordable!	If you have an idea for a project that doesn't fit the current theme then submit your idea in the comments section of the monthly poll.
List the Steps	Submit Video Proof
Provide the steps you took to complete your project (text, video, or images). This could be a step by step how-to-guide, vlog, schematics, coding, napkin drawings, voice narration, or whatever you think will be useful!	If it doesn't work that's fine, this is more about the journey than the end product. A short video is all that is required but you can shoot as much video as you like. You are encouraged to be creative and have as much fun as possible!

Your Project Examples

Proving Science
Salt water cell	Measuring Electromagnets - the Magneto Mutant Magnetic Measurement Meter (MMMMM-1000)
www.youtube.com/watch	www.youtube.com/watch

Your Prizes

One Grand Prize Winner Wins a $200 Shopping Cart!	Three First Place Winners Win a $100 Shopping Cart
One Grand Prize Winner Wins a $200 Shopping Cart!	3 First Place Winners a $100 Shopping Cart!

Your Project, Your Ideas!

About Project14	Directions
Every month you'll have a new poll where you'll get to decide an upcoming project competition, based on your interests, that will take place a couple of months in advance. Themes are broad in scope so that everyone can participate regardless of skill set. What are Monthly Themes? Every month (around the 14th of each month) a new theme will be posted on Project14. Submit your ideas (proposals) for your projects to get feedback from the rest of the community. Submit a project entry in the Theme space once you start working on it. What are Monthly Theme Polls? Every month (around the 14th of each month) there is a project theme poll. Vote on which project competition you want to see for the following upcoming theme. The themes voted on during the previous poll decided the upcoming theme. If you submit an idea for a theme that is not used then it can still be used in a future poll. Themes comments and ideas from the comments section of the project theme poll.	Step 1: Log in or register on element14, it's easy and free. Step 2: Post in the comments section below to begin a discussion on your idea. Videos, pictures and text are all welcomed forms of submission. Step 3: Submit a blog post of your progress on your project by the end of the month. You are free to submit as many blog entries as you like until the beginning of the next theme. Be sure to include video proof of your project! Visit: Proving Science or tag your project blog ProvingScienceCH You have until September 14th End of Day to submit your completed project! Submit an EntrySubmit an Entry A jury consisting of your peers will judge project submissions!

About Project14

Directions

Every month you'll have a new poll where you'll get to decide an upcoming project competition, based on your interests, that will take place a couple of months in advance. Themes are broad in scope so that everyone can participate regardless of skill set.

What are Monthly Themes?

Every month (around the 14th of each month) a new theme will be posted on Project14.
Submit your ideas (proposals) for your projects to get feedback from the rest of the community.
Submit a project entry in the Theme space once you start working on it.

What are Monthly Theme Polls?

Every month (around the 14th of each month) there is a project theme poll.
Vote on which project competition you want to see for the following upcoming theme.
- The themes voted on during the previous poll decided the upcoming theme.
- If you submit an idea for a theme that is not used then it can still be used in a future poll.
Themes comments and ideas from the comments section of the project theme poll.

Step 1: Log in or register on element14, it's easy and free.

Step 2: Post in the comments section below to begin a discussion on your idea. Videos, pictures and text are all welcomed forms of submission.

Step 3: Submit a blog post of your progress on your project by the end of the month. You are free to submit as many blog entries as you like until the beginning of the next theme.

Be sure to include video proof of your project!

Visit: Proving Science or tag your project blog ProvingScienceCH

You have until September 14th End of Day to submit your completed project!

Submit an EntrySubmit an Entry

A jury consisting of your peers will judge project submissions!

In the Comments Below: Let Us Know Your Proving Science Ideas!

Your Project Can Involve Anything from a Scientific Apparatus to Demonstrating a Scientific Principle!

Tags: provingsciencech

Documents

Documents

Project14 | Winners Announcement: Proving Science: From Experiments to Scientific Apparatuses!

Grand Prize:

Where Did My Volts Go? by kmikemoo:

Voltage Drop Bonus Content

First Place Winners:

The Planck Constant and the Relationship of Frequency to Photon Energy by fmilburn:

Electric Hula Hoop by dougw:

Experimenting with AC Current Sensing by jw0752 :

Measuring the speed of sound by kk99:

Calorie Meter and Activity Tracker by harjinagi:

Radioactivity fun! by neuromodulator:

In the comments below:

Be sure to Congratulate the Winners and Keep Being Awesome!

Project14 | Proving Science: Build an Apparatus, a Measuring Device or Demonstrates a Principle of Science!

In the Comments Below: Let Us Know Your Proving Science Ideas!

Your Project Can Involve Anything from a Scientific Apparatus to Demonstrating a Scientific Principle!

Submit a Blog in or tag your post ProvingScienceCH for a Chance to Win!

Flipping Core Memory Bits Directly With a Magnetic Stylus by abg123 :

Magnetostriction - Exploring one Application by jw0752

Salt water cell by kk99

Caustic XMAS by neuromodulator

DIY Test Equipment: The Di-o-Matic, a Simple Diode Tester [Arduino] by jc2048

Measuring nanoamps by koudelad

Measuring Electromagnets - the Magneto Mutant Magnetic Measurement Meter (MMMMM-1000) by shabaz:

Your Chance to Win

Your Project Examples

Your Prizes

In the Comments Below: Let Us Know Your Proving Science Ideas!

Your Project Can Involve Anything from a Scientific Apparatus to Demonstrating a Scientific Principle!