So if you keep the energy of the laser at the right energy, it will eventually slow the atoms down until they reach absolute zero (almost). The result is that the lasers only work to slow the atoms down (make things colder), but never to speed the atoms up. However, when they travel in different directions, they see different energy that doesn't effect them at all due to the doppler effect. When they travel towards a laser beam, they see a certain energy from the laser. So the net effect is that the people keep walking slower and slower, until they have almost stopped. However, walking in other directions doesn't really affect them at all. When the people (atoms) try to walk against the waves, they slow down. The waves are the lasers beams traveling in one direction. Now imagine them trying to walk around in the waves. Imagine there a bunch of people at the beach. You can cool something to absolute zero (almost) by shining lasers at it. As the Earth's surface was still in a semi-molten state, this would have appeared to a static observer as a gigantic lava wave, circling the Earth multiple times per day.Įdit: Thanks for the gold! You have now completed my username kind Redditor.Įdit 2: If people are interested in a computer simulation of the moment of impact, here is a cool one In effect, this means that the early moon was capable of producing a perpetual "Wave" that would be experienced across the Earth several times a day due to the effect of this tidal bulge. Whilst the Earth was in a semi-molten, pre-crustal period of early development, the proximity to the moon, combined with the very short orbital period meant that the tidal forces that the moon exerted on the Earth were vastly stronger and more frequent. The moons orbit has been slowing as its distance has been increasing from the Earth. So much so that several billions of years ago the entire lunar cycle was on the order of hours, not days. Now.what is REALLY cool is that the moon used to be a lot closer. Much of this material coalesced and became the moon as we know it. >!insert spoiler here!< Other subreddits you might like: someĪccording to the Giant Impact Hypothesis, a Mars-sized object collided with Earth at an oblique angle, obliterating a huge section of the existing upper layers and ejecting a massive amount of material into orbit.
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