Class notes
Class notes Quantum physics
- Course
- Institution
It's all about quantum physics
[Show more]
Seller
Follow
sribadrinathan2006
Content preview
Richard Fineman won the Nobel Prize for his work on quantum electrodynamics. He said ifyou think you understand quantum physics you don't understand quantum mechanics. The
theory is arguably the most successful scientific theory out there and is let us invent
technologies like computers digital cameras digital cameras LED screens. There 's nothing
in quantum mechanics that tells us how the wave function collapses and this is not only true
for electrons but everything in the universe. The famous double slit experiment has huge
consequences for our model of the universe and it was very surprising the first time it was
done physicists are still grappling with this question today. This is where the phrase things
can be in two places at once comes from this is known as superposition which comes from
the fact that this wave can be made by adding or superimposing these two waves. Einstein
was uncomfortable with this idea because if you measure one of the particles here you
instantaneously know what the other will be even if it 's billions of miles away and that 's got
a whiff of faster-than-light communication which is not allowed by the theory of relativity.
A sine wave gives you a precise momentum and any wave that is n't a perfect wave has to
build out of multiple different sine waves. Each of the possible different values of momentum
for the particle has a different wavelength. This is Heisenberg 's uncertainty principle you can
only know certain things precisely but not everything. Quantum physics is a fundamental
property of the universe. I think that quantum mechanics is n't too difficult for most people to
get the basics of what 's going on in the past I've relied on analogies to try and explain it but
here I 've just described what's actually going on which I think might be more helpful but if
you 've got more questions I 'll be on the comments below so ask away for me the weird
thing about quantum physics is that on the one hand it 's incredibly accurate and predictive
but also it's got giant holes in it like the measurement problem.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller sribadrinathan2006. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now