Dutch optics engineer Ralf Ottow created a 38-million-candlepower homemade flashlight he called the Maxblaster. It can shoot a lightbeam 4 miles long!
Powered by a pack of 54 batteries, the Maxablaster can put a bright spot of light on a cloud four miles high and illuminate a house from just as far. But Ottow doesn’t use it to spook his neighbors. “It’s not a torch you’d walk your dog with,” he says. “It would probably cook your dog.”
http://www.popsci.com/diy/article/2008-01/handheld-sunbeam - via GeekAlerts
Comments (4)
Bat. Signal.
I wonder how long you can use this unusually bright device.
It would have been useful to know the range, the mode, and the median. As well a breakdown into quartiles, to better explain the age ranges...Yes, my Masters in Statistics is coming along swimmingly!...
Most active users are not replacing real life engagement with online activity - rather, the web is being used to deepen existing connections and make new ones. (search for "face to facebook" gatherings, "tweetups" or find a group based on your interests at meetup.com)
Last, Skipweasel, I love that you're still using a newsgroup. i spent a lot of time at various alt.rec.sci.etc... :)
For instance, if the average age of Facebook is 38. that means for every 18 year old using it there are just as many 58 year olds too? I don't think so.
1. Have no age(like bands)
2. Are character pages(Ben Franklin, Albert Einstein, etc)
3. Are people who wish to elude search(i.e. me)