Interactions
This process occurs when an electron in an Aton gains energy, jumps to a higher level, then falls back, releasing energy in the form of a photon.
What is emission?
This phenomenon happens when light from a distant star is bent by the gravity of a massive object, like a black hole.
What is gravitational lensing?
Light behaves as both a wave and this discrete packet of energy.
What is a photon?
Sun screen protects skin by doing this to UV rays, preventing them from penetrating deeper into skin tissues.
What is absorption?
The color of a star reveals this key property, with blue stars being hotter and red stars being cooler.
What is temperature?
This property of light causes it to bend when passing from air into water, making a straw look broken in a glass.
What is refraction?
This property of matter, such as frosted glass, lets some light pass through but scatters it.
What is translucency?
Astronomers use this technique to split starlight into a spectrum to figure out its chemical composition.
What is spectroscopy?
X-rays are useful in astronomy because they reveal these extremely high-energy cosmic phenomena.
What are black holes?
This phenomenon explains why the sky appears blue~ shorter wavelengths (like blue light) do this more than longer ones (like red light).
What is scattering?
This type of light, emitted by hydrogen at 21 cm, helps map the spiral arms of the Milky Way galaxy.
What is radio waves (from the hydrogen line)?
This type of light, with longer wavelengths than visible light, is used in remote controls and heat detection.
What is infrared?
Isaac Newton demonstrated that white light is made of all colors by using this tool to separate it into a spectrum.
What is a prism?
The "redshift" of distant galaxies, caused by the expansion of the universe, is an example of this effect.
What is the Doppler effect?
This concept in quantum mechanics states that light can behave as both a wave and a particle.
What is wave-particle duality?