[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:05.02,0:00:08.19,Default,,0000,0000,0000,,This is massive space power facility in Cleveland, Ohio.
Dialogue: 0,0:00:08.89,0:00:11.62,Default,,0000,0000,0000,,And it is the world's biggest vacuum chamber.
Dialogue: 0,0:00:12.14,0:00:14.94,Default,,0000,0000,0000,,It's used to test space craft in the conditions of outer space.
Dialogue: 0,0:00:15.25,0:00:21.22,Default,,0000,0000,0000,,And it does that by pumping out the 30 tons of air in this chamber.
Dialogue: 0,0:00:21.82,0:00:23.79,Default,,0000,0000,0000,,Until there are about 2 grams left.
Dialogue: 0,0:00:26.61,0:00:30.70,Default,,0000,0000,0000,,This kind of got an eccentric construction which is powered it's history,
Dialogue: 0,0:00:30.99,0:00:32.80,Default,,0000,0000,0000,,it was built in the 1960's,
Dialogue: 0,0:00:32.80,0:00:36.68,Default,,0000,0000,0000,,as a nuclear test facility to test nuclear proportion systems
Dialogue: 0,0:00:36.68,0:00:40.38,Default,,0000,0000,0000,,and that meant that they build it out of aluminum
Dialogue: 0,0:00:40.38,0:00:42.27,Default,,0000,0000,0000,,to make the radiation easier to deal with.
Dialogue: 0,0:00:42.77,0:00:45.19,Default,,0000,0000,0000,,Aluminum is not the best thing,
Dialogue: 0,0:00:45.19,0:00:48.29,Default,,0000,0000,0000,,the strongest material to build a vacuum chamber
Dialogue: 0,0:00:48.29,0:00:51.85,Default,,0000,0000,0000,,so they build out of concrete skin
Dialogue: 0,0:00:51.85,0:00:56.17,Default,,0000,0000,0000,,which is power radiation shield and imparts an external pressure vessel
Dialogue: 0,0:00:56.17,0:01:00.62,Default,,0000,0000,0000,,so this thing can take the force present on the outside
Dialogue: 0,0:01:00.62,0:01:04.37,Default,,0000,0000,0000,,when it pumps out to the conditions of outer space.
Dialogue: 0,0:01:12.71,0:01:14.94,Default,,0000,0000,0000,,Galileo's experiment is simple,
Dialogue: 0,0:01:14.94,0:01:18.14,Default,,0000,0000,0000,,it took a heavy object and a light one
Dialogue: 0,0:01:18.14,0:01:21.82,Default,,0000,0000,0000,,and dropped them at the same time to see which fell fastest.
Dialogue: 0,0:01:21.82,0:01:34.02,Default,,0000,0000,0000,,♪
Dialogue: 0,0:01:36.58,0:01:39.12,Default,,0000,0000,0000,,Now on this case, the feathers fell to the ground
Dialogue: 0,0:01:39.12,0:01:41.41,Default,,0000,0000,0000,,at a slower rate than the bowling ball
Dialogue: 0,0:01:41.41,0:01:42.85,Default,,0000,0000,0000,,because of air resistance.
Dialogue: 0,0:01:48.47,0:01:52.19,Default,,0000,0000,0000,,So in order to see the true nature of gravity
Dialogue: 0,0:01:52.19,0:01:53.74,Default,,0000,0000,0000,,we have to remove the air.
Dialogue: 0,0:02:12.100,0:02:17.70,Default,,0000,0000,0000,,It takes three hours to compact the 800 thousand cubic feet of air
Dialogue: 0,0:02:17.70,0:02:18.38,Default,,0000,0000,0000,,for the chamber.
Dialogue: 0,0:02:19.22,0:02:21.32,Default,,0000,0000,0000,,Okay we drop two mil-liter in the last 30 minutes.
Dialogue: 0,0:02:22.46,0:02:24.22,Default,,0000,0000,0000,,But once it's complete there's a near
Dialogue: 0,0:02:24.22,0:02:26.10,Default,,0000,0000,0000,,perfect vacuum inside.
Dialogue: 0,0:02:27.25,0:02:32.00,Default,,0000,0000,0000,,6904, manual 10 percent open, station one go for drop.
Dialogue: 0,0:02:32.00,0:02:38.22,Default,,0000,0000,0000,,Male giving instructions.
Dialogue: 0,0:02:39.92,0:02:52.26,Default,,0000,0000,0000,,10, 9, 8, 7, 6, 5, 4, cameras on, 3, 2, 1, release.
Dialogue: 0,0:02:53.16,0:03:21.82,Default,,0000,0000,0000,,♪
Dialogue: 0,0:03:21.82,0:03:23.51,Default,,0000,0000,0000,,Laughing
Dialogue: 0,0:03:25.04,0:03:27.32,Default,,0000,0000,0000,,They came down exactly the same time.
Dialogue: 0,0:03:32.66,0:03:35.65,Default,,0000,0000,0000,,Exactly. Exactly the same.
Dialogue: 0,0:03:46.48,0:03:47.98,Default,,0000,0000,0000,,Issac Newton would say ,
Dialogue: 0,0:03:47.98,0:03:49.54,Default,,0000,0000,0000,,that the ball and the feather fall
Dialogue: 0,0:03:49.54,0:03:53.44,Default,,0000,0000,0000,,BEcause there's a force pulling them down, gravity.
Dialogue: 0,0:03:54.90,0:03:57.39,Default,,0000,0000,0000,,With Einstein would see imagine this scene differently.
Dialogue: 0,0:03:58.96,0:04:01.81,Default,,0000,0000,0000,,The happiest thought of his life was this.
Dialogue: 0,0:04:02.50,0:04:05.02,Default,,0000,0000,0000,,The reason the bowling ball and the feather
Dialogue: 0,0:04:05.48,0:04:09.67,Default,,0000,0000,0000,,fall together is because they're not falling,
Dialogue: 0,0:04:09.67,0:04:15.57,Default,,0000,0000,0000,,they're standing still, there is no force acting on them at all.
Dialogue: 0,0:04:15.92,0:04:20.56,Default,,0000,0000,0000,,♪
Dialogue: 0,0:04:20.56,0:04:23.14,Default,,0000,0000,0000,,A reason that if you couldn't see the background,
Dialogue: 0,0:04:23.14,0:04:26.59,Default,,0000,0000,0000,,that the no way of knowing that the ball and the feathers
Dialogue: 0,0:04:26.59,0:04:28.98,Default,,0000,0000,0000,,were being accelerated towards the earth.
Dialogue: 0,0:04:32.29,0:04:34.69,Default,,0000,0000,0000,,So it concluded they weren't.