A Wood’s lamp examination is a procedure that uses transillumination (light) to detect bacterial or fungal skin infections. It also can detect skin pigment disorders such as vitiligo and other skin ...

Ever since the omicron variant arrived in the US, there’s been a testing shortage in the country. Stuck between long lines at dedicated clinics and overly expensive at-home tests, many Americans have ...

The U.S Department of Energy (DOE) published a final rule in the Federal Register adopting a test procedure for integrated light-emitting diode (LED) lamps. This final rule amends the LED lamps test ...

The neon glow lamp tester is a staple in every electronics hobbyist’s lab. Here’s how to build one right in your own home. You may wonder what’s so cool about the “historical” neon glow lamp. For ...