The Secret History Of What Is Billiards > 커뮤니티 카카오소프트 홈페이지 방문을 환영합니다.

Suppose that they all jumped ten metres in the air (a huge overestimate, fifty centimetres is more likely and probably much less). Altogether that's a mass of one billion tonnes of humanity jumping ten metres in the air. Suppose that there were ten billion people (another overestimate - there are about 6.4 billion at the time of writing). Which means the distance the Earth moves when everybody jumps will be one trillionth of the distance that all the people jumped: that is to say, 10-11 metres, or about half the radius of a hydrogen atom. It is a more skilled sport than its rich, flash kid brother but not as watchable and although that ought to suggest billiards players could fit in a quick frame of snooker whenever they need a quick pound or two, the high levels of competition means the opposite is true. It added true file handling. Ceres, the solar system's largest asteroid, has less than 1/40,000th the mass of Earth; the Moon, a mere 1/80th. These objects are the heaviest you're likely to find - there are heavier moons and entire planets you could consider using, but to be honest from this point of view it looks more like using a succession of hundreds, thousands or tens of thousands of smaller asteroid impacts would be a better bet.

You could reuse the same asteroid again and again, looping it around a few gas giants and back to gain lots more kinetic energy from those gas giants in the same way that Earth just gained velocity from the rock. In the 15th century, billiards’ roots can be traced back to a lawn game similar to croquet. Moving the Sun is about 6 orders of magnitude more difficult than moving the Earth but the Sun is continuously emitting energy which can be productively harnessed for this purpose. If balanced correctly, the "hat" neither falls into the Sun nor is blown away. With half of the Sun's radiation blocked/reflected in the opposite direction, the Sun now has a net thrust upwards (i.e. in the direction of the "hat"). It is possible to use a solar sail to steer the Earth into the Sun. This can be employed to move the Sun and Earth in tandem to a place where the Earth can more easily be destroyed. Atmospheric considerations are ignored here since it is far more energy-efficient to manually remove the Earth's atmosphere, move the planet, and reinstall it. Suppose everybody on the planet weighed 100kg (which is an overestimate, 70kg is more like it, probably less).

Getting everybody in the world to jump at the same time. Suppose they were all at the exact same point on Earth (which they won't be, thus mitigating the effects of the jump). You jump up, the Earth goes down: you fall down, the Earth comes up to meet you. Jumping up and down to try to move the Earth is like mounting a fan on a sailboat, pointing the fan at the sail, and expecting the boat to move forwards. Better, you could use many, many asteroids one after the other in a steady stream, and cut down the total time significantly. WAY down to 1021 tonnes. Basically, the point here is that modelling impacts like these is a tricky business. Note that the Earth does not and will not behave like a solid, rigid billiard ball under such huge impacts as these. It all depends how fussy you are about how the Earth looks afterwards, what is billiards of course.

Certainly, no single impact is going to do all the course changing you'll be wanting to pull off. Rather than simply bouncing off, the object destroyed much of both itself and Earth, causing a VAST spray of matter to be hurled off from the impact point; this matter coagulated into what is now the Moon. Direct matter propulsion. Same method as above, just using gigantic mass drivers/railguns to fire huge quantities of matter away from Earth, instead of a rocket exhaust. Drawbacks: as above, the momentum change you get is minuscule because you have to subtract off the 11km/s needed to launch the material upwards forever at all. If it had been finished, it would have become the first electronic digital computer. For a nine-ball pool, you will have nine balls, while a three-ball pool has three balls. Most of the time, you will use 16 balls (including the white ball).