light
Ultraviolet radiation does diffract (show a diffraction pattern.) All electro magnetic radiation will diffract. Even particle radiation will diffract.
Earth does not emit light because if it did we would be a star, comit, or our own sun, and we would be made of hydrogen and helium like other stars and comits. i am no expert but my studies show the previous information. +++ You are right that only stars can emit light, but a comet (not "comit") is just like an asteroid or planet in being visible only because it reflects the light from the star it orbits.
Consider the giant elliptical galaxy M87, it has a very small, bright nucleus and a visible jet of matter 1800 PC long racing out of its core. Radio observations show that the nucleus must be no mre than a light week in diameter.
to the far right And since your reading this, have you ever watch that episode of Regular show where Mordecai and Rigby enter a rap battle with the people from Loiter Squad? I like that one. :D
A prism will separate visible light into its component colors.
Depends on which liquid you are talking of. Colored liquids are obviously easily seen. Transparent liquids like water may not be surely seen but they often reflect light and show properties like diffraction which allows you to sense its presence.Diffraction is the phenomena in which light waves are bent by an obstacle through which it passes. You may have noticed that when you fill a bucket with water, the bucket appears shallower than it really is. This is diffraction of light by water.Therefore, there is often an indirect way to see invisible liquids.
Just go play some CSS, forget physics.
light
Visible light is defined as ALL frequencies in the range of 380 to 750 nm, and shows up as a smooth transition of colors like a rainbow when we split it up with a prism or diffraction grating. The spectrum of a star (like our Sun) contains (or is missing, depending on how you look at it) absorption lines that show up as dark lines in the spectrum. The link below has a very good visual comparison.
it shows us nothing
Ultraviolet radiation does diffract (show a diffraction pattern.) All electro magnetic radiation will diffract. Even particle radiation will diffract.
X-ray diffraction
The moon shows up whenever the light reflected from its surface is strong enough to be seen ... you need to pay more attention to the sky if you think it's only visible at night!
This classic diffraction experiment was conducted in 1911.
Rule 21 It must show an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft of the beam.
In a continuous spectrum, you see every color in visible light from wavelengths around 380 nm to 780 nm. The bright light spectrum has only light at specific wavelengths, forming narrow regions of lights. This is characteristic of a particular substance, emitting these lights from its unique electron configuration. Light at specific wavelengths is emitted for different substances, but not a continuous rainbow.