The useful idea
- The useful idea
Ultraviolet radiation (UV; sometimes called ultraviolet light) is electromagnetic radiation of wavelengths of 100–400 nanometers, shorter than that of visible light, but longer than X-rays.
- How it works
Wavelengths between 10 and 100 nanometers are called extreme ultraviolet and share some properties with soft X-rays.
- Why it matters
UV radiation is present in sunlight and constitutes about 10% of the total electromagnetic radiation output from the Sun.
Why this matters
Use Ultraviolet to ask clearer questions; personal health decisions still belong with a qualified professional.
Try this
Use Ultraviolet to ask clearer questions; personal health decisions still belong with a qualified professional.
Test your recall
Which idea belongs to the explanation of Ultraviolet?
- Why it matters
- How it works
- The useful idea — correct
Ultraviolet radiation (UV; sometimes called ultraviolet light) is electromagnetic radiation of wavelengths of 100–400 nanometers, shorter than that of visible light, but longer than X-rays.
General education only — not medical advice, diagnosis, or treatment.