You'll find them in everything from CD players to dental drills to high-speed metal cutting machines to measuring systems. Tattoo removal, hair replacement, eye surgery — they all use lasers. But what is a laser? What makes a laser beam different from the beam of a flashlight?
The same is true with smaller and smaller pieces. HowStuffWorks If you want to see a hologram, you don't have to look much farther than your wallet. There are holograms on most driver's licenses, ID cards and credit cards. If you're not old enough to drive or use credit,...
Light travels from themoonto our eyes in about 1 second, which means the moon is about 1 light-second away. Sunlight takes about 8 minutes to reach our eyes, so thesunis about 8 light minutes away. Light fromAlpha Centauri, which is the nearest star system to our own, requires roughly...
In a five-star review of the album,NMEsaid: “Pusha T has managed to elevate his art to new heights, signalling that the artist is nowhere close to being done. Despite being longer than ‘Daytona’, there is succinct preciseness to ‘It’s Almost Dry...
Sky & Telescope and other publications. Joe is an 8-time Emmy-nominated meteorologist who served the Putnam Valley region of New York for over 21 years. You can find him on Twitter and YouTube tracking lunar and solar eclipses, meteor showers and more. To find out Joe's latest project,...
All of the "slots" in your search are too frequent for a collocates search. You need to do at least one of the following: 1. Search for collocates of a single word, rather than a phrase. 2. Make sure that at least one of the "slots" has a frequency of 500,000 or less. ...
Look north (or south if you're in the Southern Hemisphere): Auroras tend to appear near the magnetic poles. Be patient and dress warm: It can take hours to catch a glimpse of the northern lights, but believe me, the show is more than worth the wait. Use a camera: Faint auroras can...
I live in a small home and do not waste energy, because that would make the bill too high, although it is high anyhow. I am not an electrical engineer, so I cannot produce a cheaper energy source to use. I personally wish the power companies would install solar panels on everyone’s ...
When I was a pastor at a large church, parents would often pass me their kids while they dashed off to use the restroom, grab coffee, or have adult conversation. Sure, it’s a sign that I’m trustworthy, but these parents also knew I would enjoy hanging out with their kids and ...
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