🌟Light is a wave-like phenomenon that has traveled through space since the beginning of the universe.
🌈Interference and polarization support the wave-like nature of light.
⚛️Light consists of particles called photons that are released when protons capture electrons.
💫Different types of light, including X-rays and radio waves, exist in the universe.
👁️🗨️Some types of light, such as X-rays and radio waves, were invisible until the 19th century.
What is the nature of light?
—Light is a wave-like phenomenon that consists of particles called photons.
How does light change as it travels through space?
—Light changes in color and energy as it travels through space.
What supports the wave-like nature of light?
—Interference and polarization support the wave-like nature of light.
What are the different types of light?
—Different types of light include visible light, X-rays, and radio waves.
When were X-rays and radio waves discovered?
—X-rays and radio waves were discovered in the 19th century.
00:01The newly born Universe buzzed with boundless energy, with temperatures over a hundred million degrees.
00:12As the Universe cooled, lone electrons and protons could stick together, forming the first atoms.
00:24A particle of light, called a photon, was released when an electron and proton bound together.
00:47The photon could now travel freely through the neutral gas as light for the first time.
01:00The photon's long journey continued through the Dark Ages, the first stars, and the formation of galaxies.
01:36As light traveled through space, it changed in color and energy, with different types of light existing in the universe.
02:14Some types of light, such as X-rays and radio waves, were not discovered until the 19th century.
02:52The nature of light was a subject of debate between wave and particle theories, with wave-like properties ultimately prevailing.
