Uncategorized
- Physics
Light pulses flout sacrosanct speed limit
Faster-than-light firsts: Restless laser pulse leaves before it arrives, while merging microwaves send out a superluminal scout.
- Astronomy
Survey confirms composition of the cosmos
A team of astronomers announced this week that after measuring the redshifts of 100,000 galaxies, they have new evidence for what makes up most of the mass of the universe.
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This article says that in cavitation, “bubbles form when falling pressure permits dissolved gases to pop out of solution.” A cavitation-vapor bubble is formed when the pressure drops below the vapor-liquid saturation pressure for the liquid. Dissolved gas bubbles will just give you a fizzy cola.
