approximately 10 -7 to 10 -8 meters.

Visible light - Electromagnetic radiation with wavelengths ranging from approx-imately 400 to 700 nanometers.

Wavelength - The distance between one wave crest to the next wave crest (or one trough to the next trough).

White dwarf - A small star that has exhausted its nuclear fuel but continues to shine from residual heat.

X-rays - Electromagnetic radiation with wavelengths ranging from approximately 10 -8 to 10 -10 meters.
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