When the moon moves completely into the Earth's dark shadow cone (called the "umbra") we call that a total lunar eclipse. At the moon's average distance from Earth of 239,000 miles [383,000 km], the umbra measures roughly 5,800 miles [9,334 km] in diameter. The moon is about 2...
A cruise missile is basically a small, pilotless airplane. Cruise missiles have an 8.5-foot (2.61-meter) wingspan, are powered by turbofan engines and can fly 500 to 1,000 miles (805 to 1,610 km) depending on the configuration. A cruise missile's job in life is to deliver a 1,000...
Let's give an extreme example. Let's say that a car has been retrofitted with low-profile tires, and the odometer says that it has gone 11 miles, but mile markers say it has gone 10. The car is taken out to survey a route for the bike club. Multiplying the car's odometer readings...
Skydiving appears in reality shows and is a mainstay of the military. And it's easy to see why. The sport definitely has an edge to it. There is something about leaping from a plane and falling through the air at 120 miles per hour that really gets people's attention. ...
Again, because of the equatorial bulge, the planet's diameter is slightly smaller when measured from pole to pole, where it is about 7,900 miles (12,712 km). The equatorial circumference of Earth is 24,901 miles (40,075 km). However, from the North Pole to the South Pole, the so-...
“The monopiles made by SiF Netherlands are enormous,” says Kaimes, referring to the steel foundation tubes that are piled into the seabed to support the weight of the wind turbine and withstand the forces exerted by wind, waves, and currents. “They are eight metres in diameter, and dep...
The Earth's radius is about 4,000 miles. Suppose you are traveling along the equator for 9,039 miles. What angle in radians does that distance correspond to? Believing the age of Earth to be about 4 x 10^9 years and assuming its orbital radius of 1.5 x 10...
Just like the craters you might have made in your moon dough, not all will have the same depth or diameter. Some of the largest craters in circumference are considered pretty shallow at 15,000 feet deep whereas some newer craters are over 12 miles deep but smaller in the distance around!
Now you would think recreating a giant 432,474 mile diameter ball of gas that’s 93 million miles away would be difficult, but it’s actually quite simple. All you need is a powerful strobe, move it up 92.999 million miles closer, and viola, Sun galore!
Many prefer using an all natural 100% carnauba wax, which is made from the outside surface of a leaf [source: Oppido]. It is super strong and also friendly towards the environment. It will first of all, help fill-in any remaining deep scratches, second, protect the CD from being ...