What is the Fastest Particle Speed at 0°C?

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In summary, the fastest subatomic particle that has been observed came from cosmic rays and traveled at 0.999999999999999999999995 times the speed of light. The fastest particles accelerated by humans were electrons in LEP at CERN, reaching speeds of 0.99999999999 times the speed of light. In terms of thermal motion, the lightest particles such as hydrogen atoms have speeds of approximately 0.000003 times the speed of light at room temperature.
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javistein
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How fast does the fastest subatomic particle travel at?
When left at a temperature or zero degress Celsius.
 
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  • #2
Your question is not clear. Do you mean what is the fastest speed ever measured, or the fastest we have accelerated a particle?

In nay case, I do not think that it helps to discuss it in terms of thermodynamic equilibrium, so forget about temperature for now.

(By the way, I have changed the thread level from "A" to "B" (high school). Tell me if you would prefer an answer at the undergraduate "I" level.)
 
  • #3
In which reference frame? For every particle and for every speed below the speed of light, you can find a reference frame were it travels at this speed. With the exception of massless particles, they always travel at the speed of light.

Relative to Earth, the fastest particles accelerated by humans were electrons in LEP at CERN, at 0.99999999999 times the speed of light (the 9s are counted). The fastest particle observed came via cosmic rays at 0.999999999999999999999995 times the speed of light.

If you are interested in thermal motion: This is just a matter of finding the lightest particles. Hydrogen atoms at room temperature have a speed of the order of 1 kilometer per second, or 0.000003 times the speed of light. Free thermal electrons would be faster, but having them at room temperature requires very odd conditions. Free thermal neutrons would be even faster, but there is no realistic way to produce that now.
 

1. What is the fastest particle speed at 0°C?

The fastest particle speed at 0°C is the speed of light, which is approximately 299,792,458 meters per second.

2. Can any particle travel faster than the speed of light at 0°C?

No, according to Einstein's theory of relativity, the speed of light is the maximum speed at which any particle can travel, regardless of temperature.

3. How does temperature affect the speed of particles?

Generally, an increase in temperature will result in an increase in the average speed of particles. However, at 0°C, the speed of particles is limited to the speed of light.

4. Are there any exceptions to the speed of light being the fastest particle speed at 0°C?

No, the speed of light is considered to be a fundamental constant and is the maximum speed at which any particle can travel, regardless of temperature.

5. Can the speed of particles be measured precisely at 0°C?

The speed of particles, specifically the speed of light, can be measured very precisely using advanced scientific equipment. However, at 0°C, the speed of particles is limited to the speed of light and cannot be exceeded.

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