The Cherenkov effect - is the equivalent of a sonic boom, when an airplane is traveling faster than sound. It consists in the fact that electrons are moving faster than the speed of light. Instead of a sonic boom, the effect is electromagnetic radiation, which manifests itself in the form of blue light.
This effect occurs in nuclear reactors and water storage of nuclear fuel. Electrons emanating from the fuel create a looking blue glow that surrounds the entire reactor.
Some types of shrimp can also create a similar shock wave underwater,
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stunning or even killing at a distance
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with just a snap of their oversized claw.
Sonoluminescence is the emission of light from imploding bubbles in a liquid when excited by sound.
Sonoluminescence was first discovered in 1934 at the University of Cologne. It occurs when a sound wave of sufficient intensity induces a gaseous cavity within a liquid to collapse quickly, emitting a burst of light. The phenomenon can be observed in stable single-bubble sonoluminescence (SBSL) and multi-bubble sonoluminescence (MBSL). In 1960, Peter Jarman proposed that sonoluminescence is thermal in origin and might arise from microshocks within collapsing cavities. Later experiments revealed that the temperature inside the bubble during SBSL could reach up to 12,000 kelvins. The exact mechanism behind sonoluminescence remains unknown, with various hypotheses including hotspot, bremsstrahlung, and collision-induced radiation. Some researchers have even speculated that temperatures in sonoluminescing systems could reach millions of kelvins, potentially causing thermonuclear fusion however this idea has been met with skepticism by other researchers.[1] The phenomenon has also been observed in nature, with the pistol shrimp being the first known instance of an animal producing light through sonoluminescence.
“All we have to decide is what to do with the time that is given us.“
