This emission of light is fascinating because the energy required to produce the light suggests that the temperature inside the bubble exceeds 10,000 Celcius. ... So long as the amplitude of the sound wave remains stable, the bubble will continue to emit light. ... Rather than heat creating the light, Prosperetti believes that the speed of the stream of water forced from the bubble by the sound wave causes the bubble to crack, much like a solid. Because the water may move at speeds in excess of 4000 miles per hour, the cracking of the bubble produces sufficient energy to emit light. ... ...

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• Approx Pages: 2
• Grade Level: Undergraduate

Antimatter is the opposite of matter, yet it is identical to ordinary matter in nearly every way. The only aspect that differs the two is charge. Antiparticles always have the opposite charge as their corresponding particle. Paul A. M. Dirac, a physicist, formulated a theory before antimatter was di...

• Word Count: 702
• Approx Pages: 3
• Grade Level: Undergraduate

Also according to the theory of relativity, nothing can travel faster than the speed of light but most compact objects imaginable are predicted by General Relativity to have such strong gravitational force that nothing can escape them- not even light. For this reason, it is called a black hole; light, as a result disappears from the visible universe. John Mitchell, an English geologist, had written a paper in 1783 about the extraordinary strength of gravity- so strong that light could not escape it. ...

• Word Count: 984
• Approx Pages: 4
• Grade Level: Undergraduate