Caution! The site can't guarantee, that text has age permission. The site is not recommended, if you are less than 18 years old.
The site shows example sentences for English words. How the word or phrase could be used in a sentence?
" ... The laser sail concept might be great for getting tiny, tiny masses up to large speeds, but a full-scale model that achieves the desired gigaWatt power range requires a laser array that's approximately 100 square kilometers in area, or about as large as Washington, D.C. A full scale array like this could propel a "wafersat," or a thin, computerized chip about 10 centimeters in diameter with a mass of about a gram, to about 0.3% the speed of light in about ten minutes. (Increase the area to a square meter, as some hope, and you could reach about 26% the speed of light in that time!) It could propel a 100 kg payload (about half the mass of the Mars Opportunity rover) to the same speed with a much larger sail, or even a 10,000 kg payload -- perhaps sufficient for sending humans on a voyage out of the Solar System -- to speeds of 1,000 km/s, or about 100 times faster than the Apollo astronauts went on their journey to the Moon. ... "