Exploratorium - StumbleUpon. Looking at the numbers above, you'll immediately notice that you are different ages on the different planets.
This brings up the question of how we define the time intervals we measure. What is a day? What is a year? The earth is in motion. Actually, several different motions all at once. The top-like rotation of the earth on its axis is how we define the day. The revolution of the earth around the sun is how we define the year. We all learn in grade school that the planets move at differing rates around the sun. Why the huge differences in periods? Kepler briefly worked with the great Danish observational astronomer, Tycho Brahe. Here you see a planet in a very elliptical orbit. Kepler's third law is the one that interests us the most. Let's just solve for the period by taking the square root of both sides: Note that as the distance of the planet from the sun is increased, the period, or time to make one orbit, will get longer.
The Gravity Of The Situation Your Weight On Other Worlds. Big data: Drowning in numbers. Space Shuttle Discovery - 360VR Images - StumbleUpon. 11 cheap gifts guaranteed to impress science geeks. Science comes up with a lot of awesome stuff, and you don't need a Ph.D, a secret lab, or government funding to get your hands on some of the coolest discoveries.
We've got a list of 11 mostly affordable gifts that are guaranteed to blow your mind, whether or not you're a science geek. Click on any image to see it enlarged. 1. Aerogel Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. Aerogel isn't just neat, it's useful. Price: $35 2. Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. EcoSpheres came out of research looking at ways to develop self-contained ecosystems for long duration space travel. Price: $80 3. NASA has been trying to figure out how to get a sample of rock back from Mars for a while now.
Every once in a while, a meteorite smashes into Mars hard enough to eject some rocks out into orbit around the sun. Price: $70+ Shuttle-Endeavour-sts130-nuit.jpg from laboiteverte.fr - StumbleUpon. Armstrong.jpg from harvard.edu - StumbleUpon. AP15_8.jpg from usgs.gov - StumbleUpon. Hires.jpg from harvard.edu - StumbleUpon. Systemesolaire2.jpg from wikimedia.org - StumbleUpon.
Binary - its digitalicious! - StumbleUpon. How binary works: The binary number system (aka base 2) represents values using two symbols, typically 0 and 1. Computers call these bits. A bit is either off (0) or on (1). When arranged in sets of 8 bits (1 byte) 256 values can be represented (0-255). Using an ASCII chart, these values can be mapped to characters and text can be stored. It's not magic, it's just math! See also:Hex | Octal Please note: This application only encodes and decodes 8-bit ASCII text and is for entertainment purposes only.