To get additional information. Some objects emit mainly radio waves, some emit mainly X-rays, etc.
The universe is around 70% dark energy (a.k.a. empty space). The rest is mostly dark matter, with a few percent for ordinary matter. That is the current scientific model.
Radar waves have a lower frequency that light waves.The frequency of a light wave is related to wavelength and speed by the equation c = »½. The color of a light wave is also determined by the frequency. The amplitude and brightness are not related to the frequency.
Yes ... it radiates across all frequencies, with a max output in the visible range.
The earth rotates but the rest of the universe does not. So in your winter, you are facing Orion. But in fall, the earth(with you on it) has spun past that particular spot in the universe.
Universe
infrared
Yes, visible light waves have higher frequencies than radio waves. Visible light waves fall within the range of frequencies on the electromagnetic spectrum that is higher than radio waves.
Different frequencies of visible light are perceived as different colors.
their wavelengths (frequencies)
Yes,visible light is used. Frequencies of blue and red absorbed effectively
Violet
Ultraviolet light extends for quite a ways up the electromagnetic spectrum after visible violet ends. Its frequencies are higher. Wavelengths from 400nm to 50nm covering 4 groups of UV.
No, the visible frequencies of sunlight are not present at equal intensities. The intensity varies across the different colors in the visible spectrum, with some colors having higher intensity than others. This variation in intensity is what gives rise to the different colors we perceive in sunlight.
Any black object or surface.
white
A mixture of all the visible frequencies.
white light