The planned telescope will have a 21-foot diameter mirror, six times as big as Hubble's.
This was not a luxury afforded to Baumgartner and his capsule, however, which is a 6-foot diameter pressure sphere.
According to Michaud, an AVE power station with a 656-foot diameter could generate 200 megawatts of clean electricity at a price as low as 0.03 cents a kilowatt-hour.
FORBES: Peter Thiel Funds Effort To Tap Tornado Power To Generate Electricity
It has a 104 foot diameter is 74 feet deep.
FORBES: Why Can't We Start Building The World's Deepest Building?
Drilling a 2 or 3 foot hole can be done with normal equipment, while drilling a ten, fifty, or one hundred foot diameter vertical hole would require an entirely new invention.
FORBES: Why Can't We Start Building The World's Deepest Building?
Built by Mitsubishi Electric, it boasts a 59-foot-diameter, turtle-shell-shape antenna dubbed "Gamela, " after the Godzilla-slaying tortoise.
To the south, on Stocking Island, luminescent red starfish grow to over a foot in diameter.
The ship must stay perfectly still while drilling and does so using six thrusters with 15-foot-diameter propellers that can rotate 360 degrees.
To support the skyscrapers, engineers called for 7-foot-diameter concrete piles to be drilled through 23 feet of landfill, 108 feet of seabed and 56 feet of bedrock.
The first, called Ease, is a mere foot in diameter by 16-inches tall and can fly safely in tight spaces or through open windows or doors, thanks to its petite size and ducted rotors.
ENGADGET: CyPhy Works reveals tethered flying bots that can spy on you indefinitely (video)
To transport the one-ton rover and position it near the mound, engineers devised a complicated system that includes a 52-foot (16-metre) diameter supersonic parachute, a rocket-powered aerial platform and a so-called "sky crane" designed to lower the rover on a tether to the ground.
It is currently making its first pass down with a 12.5-inch diameter hole to the roof of the 50-square-meter (500-square-foot) refuge at Level 100 (100 meters above sea level).
应用推荐