Anomalous dispersion and discussion with Jim

Conversation started Jan 24, 2020 at 13:42.

Guru Vishnu

Jan 24, 2020 13:42

Hi. Some time ago, I saw a question about the possibility of refractive index of red being larger than that of violet such that the spectrum gets reversed in its order. I tried different queries - `spectrum reversed`,`refractive index red`, etc., but couldn't get close to the question I'm looking for. If possible, can someone help me find that question?
Thanks!

Jim

Jan 24, 2020 14:09

@GuruVishnu can you give any more specifics because a cursory google search comes up with nothing

Guru Vishnu

@Jim I actually made a search using the search box on the main site and not Google.

I think in addition to the queries I used, you might need to use answers:1 to eliminate duplicate tuples.

Jim

I figured that, but the site's search engine is not nearly as good as google. So I use that when I need to find something specific

Novalium Company

To make video games more relatable and immersive, let's put the player's face as the main character. In that way, the player will feel like he is literally in the game.

Guru Vishnu

Thanks for letting me know that. Do you use site:physics.stackexchange.com while searching on google for searching questions within this site?

Novalium Company

Let's make a local social network. An app that uses GPS tracking to allow other users nearby to rate your look, comment on you and so on... it's an anonymous way for people to know how others feel about them in real life.

Let's make a contact lens mouse. It tracks where you look and moves the cursor there.

Guru Vishnu

Jan 24, 2020 14:19

@Jim, I'm looking whether is it possible for the refractive index of red colour in a medium is more than that of violet colour, so that the order in which the colours in the spectrum appear get reversed.

I'm sorry if I'm disturbing you.

Jim

@GuruVishnu I'm not a materials scientist, but generally, the answer is no. That said, some materials have been engineered with various "magical" properties. I wouldn't be terribly surprised if it were possible to create such a material. But my best guess is that one cannot

Guru Vishnu

@Jim Thank you for your help. I was also thinking of the same thing but was unsure of the other possibility.

Guru Vishnu

Jan 24, 2020 14:38

@Jim: Just now, I came to know (from your profile) that you did your undergrad in rocket science (aerospace engineering?). I'm also interested to do a career in a space agency. If possible, could you provide any guidance?

To be more specific - which is the best choice amongst - aerospace, electrical, computer science, etc..? I find all of these fields to be related to space sector?

PM 2Ring

@GuruVishnu That's called anomalous dispersion. You might find something useful to you in these questions: physics.stackexchange.com/search?q=%5Bdispersion%5D+anomalous+

Novalium Company

Can we automate automation?

Guru Vishnu

@PM2Ring Thank you. I didn't know that keyword. That query gives a bunch of stuff to read about. It would also help me learn more from google :-)

Johan Liebert

Avoid pen aper scree shot of the answers, try write it, and for more information use meta! — Yuvraj Singh... 4 hours ago

Novalium Company

It's the decade of putting AI everywhere people can find. Why not make a machine that will randomly automate things... donno?

Jim

Jan 24, 2020 14:47

@GuruVishnu If those are your only options, aerospace is the one to go with. You will have to do a master's degree to specify your studies in space systems, but that's standard for everyone. I was lucky enough to have the option to do an undergrad in space engineering (none of the aero nonsense, just space stuff), which meant that I technically didn't need a master's degree, although most of my colleagues still went for one

PM 2Ring

@YuvrajSingh... Also, what does "pen aper" mean?

Pᴀᴜʟsᴛᴇʀ2

@ACuriousMind @Chris @DavidZ @rob @Qmechanic - Would you all be interested in the following:

Q: What is the angular velocity limit and maximum bank angle of a standard road curve?

I'm trying to declare some simple test conditions for a loaded vehicle where the test will output the maximum limits for that state of the vehicle. In order to calculate the maximum safe velocity, the following parameters must be taken into account: Height of present center of gravity (CG) of...

PM 2Ring

@JohanLiebert I suppose that Yuvraj means that Jujhaar can learn on Physics meta why we don't like screen shots of text & equations.

Jim

@GuruVishnu space engineering, or aerospace if that's what's available, will give you plenty of training in electrical and computer systems. It's the most relevant for working in a space agency, although the other options can provide a path to such a career.

PM 2Ring

Jan 11 at 15:04, by ACuriousMind

> Don't advertise your recent questions. If you just posted something on the main site, give it some time, and don't tell people to go there and look at it. Particularly by pinging people. That's rude. Those who can answer are already watching the queue on the main site!

Guru Vishnu

Jan 24, 2020 14:51

@Jim Thank you for you reply. There are still a lot of options which I need to search after my exams. Here there are no courses like "rocket science". Only things are "aerospace" and "avionics" where the latter deals with the electronics part.

Especially, some people say aerospace is slightly modified version of mechanical engineering.

Pᴀᴜʟsᴛᴇʀ2

@PM2Ring - Not sure what that has to do with the price of tea in China?

Jim

@GuruVishnu That's common most places. "Space engineering" is still a new field and most areas do not offer undergraduate programs in it. However, a master's degree will let aerospace students specialize in space systems

Guru Vishnu

@Jim Thank you very much for your time and reply. Are you working in the Canadian space agency? I like the Canadarm's function on the ISS :-)

Johan Liebert

@PM2Ring yes you are. Initially I misinterpreted it but as soon as I realised this I removed question.

Pᴀᴜʟsᴛᴇʀ2

@PM2Ring - Not my question I'm asking about. I'm asking if Physics would be interested in a question which doesn't belong on Mechanics.SE. As a Moderator of Mechanics, I try to give common courtesy before arbitrarily moving questions.

Jim

Jan 24, 2020 14:54

@GuruVishnu No, after my undergrad, I decided to leave the space industry and go into physics. I still have strong ties to the industry and many of my former peers and close friends are working for the CSA or in the space industry, but I work at a university.

PM 2Ring

@Pᴀᴜʟsᴛᴇʀ2 I realise that it's not your recent question, but it's still a very new question. ACuriousMind is a moderator & an owner of this room. I was just posting that link to let you know the room policy on linking recent questions.

Pᴀᴜʟsᴛᴇʀ2

@PM2Ring - You still do not understand.

Jim

Incidentally, the Canadarm was a contribution by private company MDA, not the actual Canadian Space Agency itself. In Canada, most of our space industry is privatized with the CSA only managing the front-end/astronauts

PM 2Ring

@Pᴀᴜʟsᴛᴇʀ2 Fair enough. I'm on my phone, so I didn't realise that it wasn't a Physics site question. Sorry about that.

Pᴀᴜʟsᴛᴇʀ2

@PM2Ring - No worries.

PM 2Ring

Jan 24, 2020 14:56

Phew! :)

Guru Vishnu

@Jim That's great! If possible, I'd like to discuss some more after all my exams with you. Thank you :)

@Jim I didn't know that. But the mechanism with which it grabs resupply vessels for berthing is brilliant!

Conversation ended Jan 24, 2020 at 14:59.

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