Some Physics Summaries Using Guidance From Online

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Physics is the branch of science that studies the fundamental nature of matter, energy and the interactions between them.

It seeks to have a better awareness of the universe from the smallest subatomic particles to the largest galaxies and everything in between.

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What is the difference between classical physics and quantum physics?-chatGPT.

  1. Classical physics came before quantum physics in the history of science.

  2. Classical physics deals with macroscopic (visible to the naked eye) objects and phenomena that we encounter in everyday life. Eg., describing objects moving at speeds slower than the speed of light.
    Whereas quantum physics governs the behaviour of atomic and subatomic particles (not visible to the naked eye), where the rules of classical physics no longer apply.

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  1. Classical physics: if you know the intital conditions of a system (eg., position and velocity of objects), then you can predict its future behaviour with certainty.
    In quantum physics however, you cannot know both the position and momentum of a particle at a same time, so there’s some uncertainty (the famous Heisenberg uncertainty principle). And instead it involves probability/statistics.
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  1. In classical physics, particles and waves are treated as separate entities whilst in quantum physics particles like electrons (tiny) show both particle and wave like properties depending on how they are observed.

  2. In classical physics, reality is objective and independent of observation whereas in quantum physics reality can be subjective in the sense that the act of observation plays a role in its outcome. Eg., the famous double slit experiment—whether particles behave as waves or particles depends on whether they are observed.

There are other differences but I thought I’d mention these ones for the introduction.

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Musical interlude…

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I just watched that episode of Futurama today :joy: also good luck on your studies!

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Thanks AKendrick! I appreciate it.

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I love ludvico einaudi nuvole bianche!

I’ve been struggling with motivation to study. I need a fun way to take breaks from physics - maybe this thread may help. Nice idea

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What kind of physics do you study, are you doing a degree? On it.

Yea I’m really into piano pieces that are good. Wish I could play.

Take care :slightly_smiling_face:

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Thanku so much AppleKidd. I find creating summaries on what I read is a good way to motivate me.

I wish you good luck with your studies

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@Zoe normal physics, but i switched courses form the last one I was doing and yeah it’s at uni

I wish I could play piano too, i feel like im too told to start learning tho; realistically with all the time I put into physics - I don’t have time for learning an instrument ; I even own a keyboard

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I would love it too. And I could find the time. But I don’t see it working. Regarding piano.

No worries if you can’t play it. Don’t stretch yourself too thin. :slight_smile:

Have a nice day :smiley::pray:

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BTW feel free to add your own summaries here ideally with a reference, and ask questions, ppl. If you want.

I think it is entertaining and stimulates us. Perhaps. :pensive:

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When I was a kid I wanted to build a TV, a turning roll with holes for the 200+ lines and a LED in the center of it :screwdriver: :carpentry_saw:

Didn’t happend

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When 2 quants behave like 1 quant and are in different times is this causing fuzziness ?

Blurring time

How many quants are shooting thru a body in a second ?

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What is a quant? :thinking:

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And isn’t it crazy that humans are able to speed up some grams of elektrons that there is an energy as strong as two trains chrashing with about 300 kilometers per hour together ?

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Sure, lol.

Thanks 4 da contributionz

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Quantum

15151515

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I like quantum physics cos there’s a saying,

If you think u understand it, then u don’t lol.

Quite odd