字幕列表 影片播放 列印英文字幕 I am going to add quantum physics to my lectures and movies. Everybody talks about it. Apparently you can prove everything with it. UFOs, space travel, other dimensions. Where do my socks go in the washing machine? ... If you don’t mention it people think you don’t know what you’re talking about. Actually I don’t really know what quantum physics is. I think I’ll get a thin book on it. I don’t want to make things too complicated. but I’m now thinking myself into the matter and one experience that always comes up when I think about quantum physics is… when I was young not too long ago, when I was about 15, 16 years old I was member of a club where we did gliding Gliders are small planes for one or two people without an engine As they don’t have an engine you have to find a way to get them into the air before you can fly them There are two ways. One is using another plane that has a engine which we didn’t do The second possibility is a winch and I explain that in a moment. That was what we did. The planes were stored somewhere in town in a big hall, disassembled, on hangers. On the weekend we just took the hangers and drove out to the fields, the forest, outside of town assembled the planes, put them on one side of a big field, one kilometer long and a big truck with a winch on the other side of the field The winch was a 250 horse power, 8 cylinder Chevy engine, something like that with a steel rope, one kilometer steel rope and that steel rope was pulled to the other end of the field hooked into a plane and then reeled in and the plane went up 80 to 100 kilometers per hour speed, for a few seconds and then it was 300 to 400 meters high and then automatically the rope disengaged and gently glided back to the ground on a small parachute. To pull this rope from one end of the field to the other we used small cars. And I’m now moving closer to the topic of quantum physics small cars, old cars, VW beetles they were not allowed on the street anymore We weren’t allowed on the street either because we didn’t have a license but we used these cars and we drove these cars and we loved it That’s where we learnt how to drive It was fun. So we pulled this rope from one end to the other and when the planes landed we also used the cars to pull the planes back to where they belonged for the next start very slow, because the pilot had to hold the wing Also with the rope attached… 20 km/h… not much, second gear So far so good. One problem… or not a problem, rather a hassle it took hours to assemble and disassemble the planes and go back to town so sometimes on the weekend we decided to stay up there So instead of disassembling the planes we pulled them into a small hollow near the trees, secured them, put up a tent and slept overnight... fire everything, was great, great experience the younger ones, those without a family also the cars, about the cars... During the daytime we were confined to the purpose of pulling ropes and planes at slow speed at night there was no such limitations so some people drove around, we drove around with these cars it was amazing what these cars still had in them in terms of power Problem: Sometimes in the morning these cars had dents that weren't there in the evening So some of the grown-ups assumed that someone was driving these cars at night That was not allowed. and a bigger problem was something could happen Something could get damaged they were very worried about that issue because we couldn't even get insurance for that because the cars weren't supposed to drive off the field So if somebody drove through the woods damaged some fence - we'd have to fix it Somebody runs over somebody, injures somebody injures himself - we can close shop because it cost so much money we can't pay that. And so on and so on. So at some point they said we can't stay overnight anymore. If this doesn't stop we have to go home every evening come back every morning - no matter how long it takes. One young guy then came up and he had a theory. He was studying physics so he had a theory about these dents and he explained to all of us that the atoms - - and we are now fully in quantum physics at this moment - the atoms they vibrate, they oscillate around a certain zero point and most of the time-- I mean everywhere, not just in cars in trees, in flowers and here and usually these movements of the atoms cancel each other out and everything looks stable and firm. But if all the atoms suddenly oscillate in one direction then the car could move in that direction would move in that direction and could hit a tree, for example, in the process And then the atoms oscillate back in the same direction and the car moves back A little bit of a stretch maybe. What are the odds that all the atoms move back in the same direction? But anyway, there is some logic to it It could be. Can't argue with logic But the grown-ups didn't pick up on that It dragged on a bit a little bit and I don't know exactly anymore how it ended It ended amicably even though dents kept appearing and nobody observed anything unusual over night But I feel, I'm sure actually that if we had known more about quantum physics at that time we could have made a much stronger case So because of that I'm going to add quantum physics to my lectures. If you have questions, any ideas, anything you want me talk about in the context of quantum physics don't hesitate, ask a question, comment... whatever. so far so good... Have a nice day. Please check back.
B1 中級 一切皆有可能...... "量子物理學 (Everything is possible... quantum physics) 145 12 Kevin Lu 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字