/sci/ - Science & Math

[Anonymous No.5761550]

Something I've been wondering /sci/

In quantum mechanics you only ever hear about the act of measuring some property, but is it possible to do a partial observation?

For example, instead of "measuring it's position" can you check to see if the particle is in a certain region?

Obviously if it is there then the outcome is the same, but what happens to the state of the particle of it is found to NOT be in that region?
I would imagine that all other probabilities would increase the more you rule out certain possibilities.


Or is it just not possible? Although I can't imagine why it wouldn't be.

[Anonymous No.5761575]

What if Schrodinger opened the box and there is no cat?

[Anonymous No.5761690]

>>5761575
Are you implying that my question is at all pseudo science?

Just wondering if that is actually what you think...

Have you even taken a quantum mechanics class?

[Anonymous No.5761729]

>>5761550
>partial observation

Yes, this is possible, we do this all the time.

[Anonymous No.5761742]

>>5761729
>avatarfagging

[Anonymous No.5761753]

>>5761742
OHH NO! SOMEONE POSTED A FULL CLOTHED PICTURE OF A WOMAN! THIS CAN'T DO! MUU SHITTY SELF ESTEEM PROBLEMS AND IMMATURITY....

WAAAA WAAAA WAAAA

[Anonymous No.5761761]

Do you guys not understand the question or what?

Let me ask a similar question then:

say we had a tripple slit experiment. The particle would have a state like:
<div class="math">|\psi\rangle =\frac{1}{\sqrt{3}}|1\rangle +\frac{1}{\sqrt{3}}|2\rangle +\frac{1}{\sqrt{3}}|3\rangle</div>

now if a detector were at slit 3, for example, and it does not detect a particle then unlike the double slit experiment this cannot possible cause the particle to have a single eigenstate now because there are still two possibilities:
<div class="math">|\psi\rangle =\frac{1}{\sqrt{2}}|1\rangle +\frac{1}{\sqrt{2}}|2\rangle</div>
The above is what I think would happen, but because I've never seen anything like this treated in any QM books I can't say for sure.

That's why I'm asking.

[Anonymous No.5761767]

>>5761761
I fully understand the question. It has already been answered. The answer is "yes".

You have another question?

>inb4 some looser with mommy issue reports me for posting a solitary Dr. Who pic

[Anonymous No.5761771]

>>5761753
This site has rules. Please read them and stop being an immature shitposter.

[Anonymous No.5761776]

>>5761771
no_fun_allowed.jpg

[Anonymous No.5761779]

>>5761761
Your example is nonsensical, you aren't using the wavefunction right

[Anonymous No.5761781]

>>5761776
>no_shitposting_allowed.jpg
FTFY

[Anonymous No.5761784]

>>5761771
This just in: You are a retarded cut

[Anonymous No.5761794]

>>5761771
This just in: You are an immature retarded cunt

CUNT CUNT CUNT

[Anonymous No.5761795]

>>5761776
Grow up.

[Anonymous No.5761798]

>>5761779
There's nothing wrong with it. You're just an idiot.

[Anonymous No.5761800]

>>5761794
I am neither immature nor retarded. You are projecting.

[Anonymous No.5761804]

>>5761795
>grow up

Says the guy who FREAKS THE FUCK OUT when he see's a picture of a fully clothed woman

[Anonymous No.5761808]

>>5761804
>still hasn't read the rules

[Anonymous No.5761807]

>>5761794
>avatarfagging porn spammer who keeps throwing around infantile insults
>calls others immature retards
top lel

[Anonymous No.5761817]

>>5761808

[Anonymous No.5761818]

>>5761795
What's the point of posting here if you can't shitpost a little? There's thousands of other places to discuss science and math on the internet in a more serious manner that are objectively better than /sci/.

[Anonymous No.5761815]

>>5761804
I am not a guy and your porn picture dump is still off-topic and not welcome. This is a science and math board and an 18+ site. You are behaving like a teenager and the only thing you're contributing to the thread is derailment. Please stop posting and read the rules.

[Anonymous No.5761820]

>>5761818
You have several boards for shitposting: >>>/b/ >>>/s4s/ >>>/lounge/

/sci/ is for serious science and math discussion.

[Anonymous No.5761828]

>>5761815
>I'm not a guy

OF COUSE THE FUCK NOT!
YOU ARE SOME LITTLE CHRISTIAN GIRL WITH TERRIBLE SELF-ESTEEM ISSUES AND A TOTALLY FUCKED UP CHILDHOO! IT IS OBVIOUS AS NIGHT AND DAY!

You will never make it in society as a scientist. You are too much of an anally retarded cunt. I hope you like the tatse of cum bitch, it is the only way you will make any money.

[Anonymous No.5761831]

>>5761820
>/sci/ is for serious science and math discussion
Prove it. There hasn't been a single serious post on this board since 2010. If something like >>5761551 is not ironic over 80% of the posters here are genuinely mentally retarded.

[Anonymous No.5761844]

>>5761761
>>5761550

Anway, before I got de-railed by the retarded house-cunt of /sci/.....

http://www.newscientist.com/article/dn19215-tripleslit-experiment-confirms-reality-is-quantum.html

They have actually done the three-slit experimnet. It might be a littler hard to read, but it is worth it if you are really interested.

[Anonymous No.5761845]

>>5761828
What a rude and immature reply. How old are you? 12? GTFO.

[Anonymous No.5761853]

>>5761845
>>5761845
Quantum mechanics (QM – also known as quantum physics, or quantum theory) is a branch of physics which deals with physical phenomena at microscopic scales, where the action is on the order of the Planck constant. Quantum mechanics departs from classical mechanics primarily at the quantum realm of atomic and subatomic length scales. Quantum mechanics provides a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter.

[Anonymous No.5761857]

>>5761853
You can copypaste wikipedia? I guess for someone as uneducated as you this is impressive.

[Anonymous No.5761864]

>>5761857
What are the practical applications of MVA in terms of SUSY analysis?

[Anonymous No.5761892]

>>5761864
Do your homework alone.

[Anonymous No.5763962]

>>5761550
>>5761761
real posts, bump

interesting question, and this is why I would love to go into physics

[Anonymous No.5763972]

>>5763962
The answer is yes.

[Anonymous No.5763979]

>>5763962
The answer is yes, it's possible. Pretty much any measurement is going to be a partial measurement.

[Anonymous No.5764263]

Yeah, I think I read a paper about how the act of measuring the particle can be subtle enough that it does not push it out of a domain of stability and the particle returns to the state in which it was measured.

[Anonymous No.5764272]

What's with all the deleted posts?