All urban stargazers know this and have done since the switch from orange sodium vapor lamps to white LEDs, which emit much more blue light. Now we have a mass of observational evidence.

High intensity discharge (HID) is a general term for mercury, metal halide, and high-pressure sodium lamps. Mercury lamps operate at a relatively high pressure and temperature. Most of the light is ...

"Ensure water is diverted away from the structure. Using sodium vapor light bulbs is also less likely to attract centipedes ...

The light's warmth and intensity interest the ... which releases brighter glows and heat radiation that lure the critters in.

[The Action Lab] uses his coil to make a metal plasma — in particular, sodium. You can see the results in the video below. To create a metal plasma, you need a metal vapor and sodium can create ...

Street lights rely on light emitting diode (LED), incandescent, high pressure sodium, low pressure sodium, mercury vapor, metal halide, and high intensity discharge (HID) bulb technology to provide ...

The kiln facility offers five large 10 cubic foot Skutt electric kilns, one large 18 cubic foot oval Bailey electric kiln, a 90 cubic foot updraft gas kiln, a 40 cubic foot updraft gas kiln, a 50 ...

Daniela Augenstine, who worked in Berlin's street furniture department, told The Guardian that the east uses sodium-vapor lamps, which are older and produce a yellower light, while the west uses ...

Spiders love a basement because it is dark, humid, and attracts other insects they can eat. Learn how to get rid of spiders ...

You’re drenched in sweat, the workout feels harder, and each step just feels light a slog ... humidity is a measure of how much water vapor is in the air, so in high humidity, the air is ...

By Buzz Trexler Star Correspondent James Winchester has appeared three times before Elizabethton City Council in recent ...

At the high temperatures reached during planetary impacts, many elements that we are not used to thinking of as gasses - like potassium, zinc, and sodium - can exist as vapor. The concentrations ...