Blog

Denmark Installs Red Street Lights, Helping with Biodiversity

Catwell

Denmark installed red LEDs in 2022 to help with biodiversity. (Image Credit: Light Bureau) Engineers design things for interaction, for humans. HMI, GUI, touchscreen, simple buttons and switches. We interpret the world back to us. But, what if we di...
- 18 Mar 2026
Researchers Develop Water-Based Enzyme Inks, Simplifying the EBFC Manufacturing Process

Catwell

Example of a skin patch health monitor. (Image Credit: Bing Image Creator) Wearable biosensors are quickly evolving, with smaller devices like flexible skin patches continuously monitoring physiological signals. These analyze sweat to measure metabo...
- 13 Mar 2026
SWOT Spots Large Waves During Major Storms

Catwell

Storm Eddie produced an ocean wave that reached 19.7 meters tall. (Image Credit: ESA/Planetary Visions) Ocean waves that grow to over twenty meters could threaten maritime safety, offshore infrastructure, and coastal communities. However, measuring ...
- 12 Mar 2026
Transatlantic TAT-8 Fiber-Optic Cable is Being Removed from the Seabed

Catwell

(Image Credit: pixabay) For over twenty years, the Trans-Atlantic Telephone 8 (TAT-8) cable sat on the ocean floor in its out-of-operational-use state. Now, SubSea Environmental Services is pulling it from the seabed close to Portugal. The world&rsq...
- 6 Mar 2026
Researchers Create the World’s Smallest QR Code

Catwell

The smallest QR code is 1.98 square micrometers and can only be seen under an electron microscope. (Image Credit: TU Wien) TU Wien recently collaborated with Cerabyte, a data storage company, to create the smallest QR code measuring just 1.98 square...
- 25 Feb 2026
NASA Made Its Sea Level Changes Data Publicly Available

Catwell

NASA’s reference grid of sea surface height anomalies. (Image Credit: NASA) For over three decades, NASA has been using Sea Surface Height (SSH) products derived from satellite altimetry (TOPEX/Poseidon, Jason series, and Sentintel-6) to track...
- 18 Feb 2026
Researchers Captured a Visualization of a Hydrogen Atom’s Electron Orbital

Catwell

These images demonstrate on-resonance tunneling ionization through the Coulomb potential, with non-resonant ionization shown in A) and C). Meanwhile, B) shows resonant ionization producing a two-node wave function pattern. (Image Credit: Stodolna et...
- 30 Jan 2026
How many gas sensors can be connected to an ESP32 microcontroller?

siddhatej

I am working on an Electronic Nose / gas sensing project using ESP32. I want to know how many gas sensors can be connected to ESP32 and what are the limitations.
- 21 Jan 2026
Clouds of Microplastics Discovered in China

Catwell

This diagram shows ring slices with polymer composition (C-rich, C+0-rich, C+others fractions) for atmospheric microplastics (outer) and nanoplastics (inner) groups, plastic fluxes from single events, TSP from 5-day composites (d, day). (Image...
- 20 Jan 2026
LEGO Introduces New Smart Brick at CES 2026

Catwell

LEGO unveiled the Smart Brick, set to launch later this year. (Image Credit: LEGO) The most important announcement at CES 2026 in Las Vegas, LEGO unveiled a more interactive way to play---the Smart Brick, the main piece of its upcoming Smart Play sy...
- 16 Jan 2026
Connector Design for Harsh Environments: Miniaturization, IP Ratings, and Signal Integrity

Catwell

(Image credit: Pixabay) Engineers working in industrial, automotive, marine, or outdoor systems know that connectors aren't just passive hardware; they can be a critical point of failure when environments become extreme. Dust, moisture, vibratio...
- 14 Jan 2026
Researchers Develop Tactile Screen That Can Be Seen and Felt

Catwell

Researchers developed a screen patterned with tiny pixels that expand outward, forming bumps when illuminated, allowing users to see and feel the animations. (Image Credit: UC Santa Barbara) Researchers at the University of California, Santa Barbara...
- 9 Jan 2026
Modern Measurement: How Oscilloscopes and Analyzers Are Adapting to Today’s Designs

Catwell

(Image credit: Unsplash) Electronic designs have become increasingly complex over the decades. A single device can combine high-speed digital interfaces, mixed-signal control loops, RF connectivity, and power electronics, all packed into a tight for...
- 9 Jan 2026
Close-Up - Massive Tsunami Captured for the First Time Ever

Catwell

Image showing the tsunami recorded by the DART buoys and SWOT satellite. (Image Credit: The Seismic Record) On July 29, 2025, a magnitude 8.8 earthquake struck the Kuril-Kamchatka region, triggering a huge tsunami that rolled across the Pacific. Luc...
- 3 Dec 2025
Starfront Observatories Let Amateur Astronomers Get Closer to the Stars Using Robotic Telescopes

Catwell

Astronomers and astrophotographers can rent prime space to deploy their telescopes to explore the night sky. (Image credit: Starfront Observatories) Located near Rockwood, in central Texas, Starfront Observatories built a unique facility that allows...
- 7 Nov 2025
Learn About PC-Based USB Oscilloscopes and the Advantages of PicoScope 7 with element14 and Pico Technology

Catwell

(Image credit: element 14) Recently element14 hosted a one-hour technical webinar, "Scoping Out PC-based USB Oscilloscopes," featuring Ben Ellis, Technical Applications Engineer at Pico Technology. The session, which streamed live on September 11, 2...
- 24 Oct 2025
Meet WOWCube, A Rubik's Cube Reimagined

Catwell

Cubios plans to release the WOWCube later this year. (Image Credit: Cubios) We're familiar with the Rubik's Cube, a favorite childhood 3D twisty puzzle. But, now there's a new twist: WOWCube! Developed by Cubios, this cube is a puzzle r...
- 15 Oct 2025
MEMS and How It Changed The Sensing World

Catwell

An IMU-MEMS sensor. (Image Credit: Gladiator Technologies) The research and development of MEMS (Micro-Electro-Mechanical Systems) technology started in the 1960s. It has seen commercial adoption and industry growth since the 1980s, accelerating in ...
- 3 Oct 2025
Researchers Develop and Deploy an Underwater Color-Correcting Tool

Catwell

SeaSplat clears any obstructions in an underwater image and applies color corrections. (Image Credit: MIT) Researchers from MIT and the Woods Hole Oceanographic Institute (WHOI) developed SeaSplat, a tool designed to produce a replica image of the u...
- 17 Sep 2025
Your Heart Rate Can be Monitored Using WiFi

Catwell

The team used an affordable ESP32 chip to monitor heart rates. (Image Credit: Erika Cardema/UC Santa Cruz) Researchers at the University of California, Santa Cruz, have developed Pulse-Fi, a new technology that uses WiFi signals to monitor heart ra...
- 9 Sep 2025
Scientists Develop a New Trick to See Nanoparticles

Catwell

Image showing light scattering of sub-15 nm objects inside and outside a plasmonic nanocavity. (Image Credit: Nature Communications (2025). DOI: 10.1038/s41467-025-63380-8) Researchers from the University of Twente engineered a new technique that ma...
- 3 Sep 2025
Scientists Split a Photon, Demonstrating it Still Has Angular Momentum

Catwell

For the first time, scientists split a single photon (green) into two photons (red) and conserved angular momentum. (Image Credit: Robert Fickler/Tampere University) Scientists at Tampere University split a single photon into two, demonstrating tha...
- 27 Aug 2025
Researchers Develop Mini Brains to Understand Neurological Conditions

Catwell

Development of Multi-Region Brain Organoids using integrated single-nucleus analysis. (Image Credit: AdvancedScience) How many neurons create awareness? Researchers at Johns Hopkins University (JHU) created mini brains called brain organoids compose...
- 14 Aug 2025
NASA Used Optical Satellite Imagery to See the Long-Term Impact of the Megatsunami That Struck in 1958

Catwell

The largest tsunami ever recorded struck Lituya Bay in 1958. (Image Credit: NASA Earth Observatory) In 1958, a huge landslide caused 90 million tons of rock to slam into Alaska’s Lituya Bay. This impact produced a tsunami with a wave height o...
- 24 Jul 2025
Texas Researchers Develop New Technique to Predict Underwater Landslides

Catwell

Underwater landslides can impact offshore infrastructure like wind turbines. (Image Credit: Nicholas Doherty/Unsplash) When underwater landslides hit, they can move huge amounts of sediment into the ocean, potentially damaging offshore infrastructur...
- 22 Jul 2025