A driver might be found to have a level of 0.15, for example, while the legal limit is 0.08. To comprehend how we can gain access to such precise numbers, we have to ask ourselves: how does a breathalyzer work? What do those figures mean? And how do police officers find out if ...
A driver might be found to have a level of 0.15, for example, while the legal limit is 0.08. To comprehend how we can gain access to such precise numbers, we have to ask ourselves: how does a breathalyzer work? What do those figures mean? And how do police officers find out if ...
The circuit uses an LDR (Light Dependent Resistor) as a light sensor, which, in simple terms, is a resistor whose value increases in darkness and decreases in the presence of light. Then it uses one transistor to detect the light, and another to drive the relay. When light falls on the...
The number of infrared lamps does not necessarily indicate how far they project. For instance, a super-powerful infrared lamp with 25 lamps can project up to 150 to 200 meters, while a regular infrared lamp with 84 lamps can project only 30 meters. When purchasing, also consider waterproofing...
GPS Tracker and Fall Detection Sensor For older people with dementia to have a system that can track their location if they wander off. With a GPS tracker, you’ll be able to find them quickly and easily without any hassle. Make sure the medical alert system you choose has this feature!
What is electrochromic glass? How does electrochromic glass work? Stick-on electrochromic films What's good and bad about electrochromic windows? How will smart windows improve in future? Do moving lithium ions sound a little bit familiar? Find out moreWhat are "smart" windows?Glass...
If you've ever watched "Star Trek," you may remember seeing the crew of the Starship Enterprise live out their fantasies in a room called the holodeck. The holodeck was a giant, holographic projection room that allowed the crew to touch and interact with projections as if they we...
So, how does this autofocus sensor work? In simple terms, phase detection works by dividing that incoming light into pairs of images before comparing them. The light is divided as it passes through that transparent part of the main mirror, where that area acts like a beam splitter. The two...
Q: Does sleeping make a difference? A: Yes, the less you sleep, the worse it gets. Try to get at least 7 hours ofsleep each night. Q: What if you don’t sleep? A: That’s when it gets awful. You can still recover from red eyes if you wake up in the middle of the night ...
This is when multiple smart home devices are working in sync – for example, lights dimming and music playing at a specific time of the day or when you say “good morning,” or how about pinging a notification to your smartphone and playing a sharp chime when a motion sensor in your ...