with a mirror set up 5 miles (8 km) away to reflect it back to its source. Varying the speed of the wheel allowed Fizeau to calculate how long it took for the light to travel out of the hole, to the adjacent
Discover everything there is to know about the northern lights, including how they form, where they can be seen and what causes their colors. (Image credit: by Frank Olsen, Norway via Getty Images) Jump to: What causes the northern lights? Why are the northern lights so active right...
As a rough rule of thumb, you can calculate the temperature at any altitude by subtracting 3.5F (or 2C) for every 1000 feet of altitude above sea level. (This is known as the lapse rate). So in general, the temperature at 30,000 feet is 105F of 60C below the ground temperature. ...
In some situations the media has made exaggerated claims about the findings of a scientific article. For people who aren't used to reading and working with scientific literture, it would be easy to jump to conclusions picked up from a quick overview of an abstract ...