What is ultraviolet light, and where does it come from? Learn how UV radiation is classified, measured, and used in medicine, manufacturing, astronomy, and daily life, plus how to stay safe.

The summer solstice will occur on Friday, June 20, and it will be both the longest day and shortest night of 2025 in the Northern Hemisphere, according to the National Weather Service.

Electromagnetic Spectrum Is More Important Than You Think. Here’s Why It plays a significant role in our lives. Updated: Jun 04, 2025 03:39 AM EST ...

In 2024, General Stephen Whiting, the commander of U.S. Space Command opposed the sale of both the 3.1 to 3.45 GHz and the 7.0 to 8.0 GHz parts of the electromagnetic spectrum when he testified ...

Electromagnetic Battle Management-Joint Decision Support (EMBM-J DS), according to DISA’s press release, will help improve communications, navigation and weapons systems by providing U.S. military ...

When Air Combat Command redesignated the EC-37B to become the EA-37B in 2023, it was to better identify the platform’s mission: find, attack, and deny enemy use of the electromagnetic spectrum.

The light we can see exists on a segment of the electromagnetic spectrum — red has the longest wavelength, and violet has the shortest. Because of the angle of the sun, the longer wavelengths ...

On the land, in the air, on the sea, and in space, multi-spectral electromagnetic emitters enable platforms to mask their identities across several parts of the spectrum. For example, these ...

New 950th Spectrum Warfare Group gears up to safeguard military communications at Robins Air Force Base You can't see the electromagnetic spectrum, but its connections are crucial to our defense ...

F OR SOLDIERS at the front, electromagnetic defences are as vital as air: invisible when present, and disastrous when not. In July Ukrainian troops in southern Donbas found this out the hard way.

Radiation Electromagnetic radiation Light Vision Photons Perception Curious Kids Rainbows Electromagnetic spectrum Colors Curious Kids US Color vision Register now ...

For years the Defense Department and commercial providers have tussled over usage of mid-band spectrum — between 1 GhZ (gigahertz) to 6 GHz usage, which makes up the 3.1-3.45 and 3.5 GHz S-band ...