However, while the idea seems silly, in a sense it's sort of the principle behind both Project Orion and laser ablation propulsion. Since you have this handy metal pole, you can control your descent by clamping onto it and controlling your rate of descent through friction. Make sure to keep your speed low during the whole approach and descent—and, if necessary, pausing to let your hands or brakepads cool down—rather than waiting until the end to try to slow down.
If you get up to escape velocity, then at the last minute remember that you need to slow down, you'll be in for an unpleasant surprise as you try to grab on to the pole. At best, you'll be flung away and plummet to your death.
At worst, your hands and the surface of the pole will both be converted into exciting new forms of matter, and then you'll be flung away and plummet to your death.
Assuming you descend slowly and enter the atmosphere in a controlled manner, you'll soon encounter your next problem: Your pole isn't moving at the same speed as the Earth. Not even close. The land and atmosphere below you are moving very fast relative to you.
You're about to drop into some extremely strong winds. The Moon orbits around the Earth at a speed of roughly one kilometer per second, making a wide circle [10] Yes, I know, orbits are conic sections which in the case of the Moon is technically not exactly a circle. It's actually a pentagon. That's how fast the top end of our hypothetical fire pole will be traveling. The bottom end of the pole makes a much smaller circle in the same amount of time, moving at an average speed of only about 35 mph relative to the center of the Moon's orbit:.
Unfortunately for you, the Earth is also spinning, [11] I mean, unfortunately in this specific context. In general, the fact that the Earth spins is very fortunate for you, and for the planet's overall habitability.
Everest is the tallest mountain on Earth, measured from sea level. A somewhat more obscure piece of trivia is that the point on the Earth's surface farthest from its center is the summit of Mt. Chimborazo in Ecuador, due to the fact that the planet bulges out at the equator. Even more obscure is the question of which point on the Earth's surface moves the fastest as the Earth spins, which is the same as asking which point is farthest from the Earth's axis.
The answer isn't Chimborazo or Everest. The fastest point turns out to be the peak of Mt. Cayambe, a volcano north of Chimborazo.
And now you know. Cayambe's southern slope also happens to be the highest point on Earth's surface directly on the Equator. Person 1: I don't see it. The white space above the 'ed' in Fed is decorated to look like a tank turret with the barrel extending into the letter 'F'.
Along the bottom of the letters a baseball player with the number 24 on his back is reaching out to catch a baseball.
The baseball is forming the centre of the 'e' while the arm provides the break for the tail. The baseballers head marks the centre of the 'd' and the number 24 is coloured in blue to show the lower half of the stroke of the 'd'. Woman is sitting on the floor, farther from the TV. Man2 is sitting on a chair, farthest from the TV.
Man2: Wanna put on the other two? They exchange looks without speaking. Man2 is nowhere to be seen. Woman: Too bad they never made any sequels. Man1: True. Underneath the scale is an antenna symbol that leads down to a blender, an Arduino; labeled with "Arduino, just for blog cred"; and a chip; "Most expensive chip available".
To the right of the antenna there is the symbol for an inductor that has it's lower terminal going into a the left terminal of pattern that looks like a highway cloverleaf.
Connected to the other terminals of the resistor and battery is a switch that is labeled "glue open". The bottom of the two lines has a transistor with two emitters, one P and one N, and no collector. The P-type emitter is connected to the top line and a jar of scarab beetles. Above the beetles is a resistor labeled "brown blue orange".
To the right is an unlabeled resistor with a center tap going into a capacitor, with a ground on the other end.
Above the capacitor is a diode, and below an inductor. To the right is another inductor. The two inductors and ground are all covered by a "solder blob".
0コメント