Which of the following is the visible part of the spectrum of light?
color
gamma rays
sound waves
microwaves

Color

Explanation:

The electromagnetic spectrum is a classification of all the types of electromagnetic waves. They are generally classified based on their wavelengths. In order of increasing wavelength, they are:

Gamma rays

X-rays

Ultraviolet

Visible light (colors)

Infrared

Microwaves

Radio waves

These types of waves are characterized by different properties. Not all of them are visible to human eye: in fact, only a small portion of the spectrum is visible to human eye, and this corresponds to the part called visible light, which includes all the colors from violet to red. The wavelengths of this part of the spectrum fall within the range 380 nm - 750 nm approximately.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19