:rocket:The speed of light is not the ultimate speed limit in the universe.
:stop_sign:Protons have their own speed limit called the GZK limit.
:bulb:The GZK limit is lower than the speed of light.
:question:The GZK limit does not violate the principles of relativity.
:stars:Cosmic rays are high-energy particles traveling close to the speed of light.
Why can't protons travel faster than the speed of light?
—The GZK limit, specific to protons, prevents them from traveling faster. The limit is related to interactions with cosmic microwave background radiation.
Does the GZK limit violate the principles of relativity?
—No, the GZK limit is consistent with the principles of relativity. It is based on the energy loss of protons due to interactions with cosmic background radiation.
What is cosmic radiation?
—Cosmic radiation consists of highly energetic particles, including protons, traveling through space. It includes cosmic rays originating from outside our galaxy.
What are the key characteristics of cosmic microwave background radiation?
—Cosmic microwave background radiation is a relic of the early stages of the universe with a temperature of 2.7 Kelvin. It provides a stationary reference frame for measuring speeds relative to it.
How can protons reach speeds close to the speed of light?
—Protons can be accelerated to high speeds using powerful particle accelerators. However, they cannot exceed their specific speed limit, the GZK limit.
00:00The speed of light is known as the ultimate speed limit in the universe.
01:00Protons have their own speed limit called the GZK limit, which is lower than the speed of light.
02:42An electroscope can be used to measure air ionization, which is related to the presence of high-energy particles.
07:06Cosmic microwave background radiation (CMB) is a relic from the early universe and provides a reference frame for measuring speeds.
09:01Protons traveling close to the speed of light can interact with CMB and lose energy, resulting in the GZK limit.
12:18Events with high-energy cosmic rays exceeding the GZK limit have been detected, raising questions about their origin.
