For Science!

[Feicarsinn]

So, we're a smart bunch of guy around here right? We've got people who have studied biology, chemistry, physics, maths, engineering, etc. Why not have a place to discuss them then eh? If you've got a topic to discuss or a question to ask or simply have an article or video that you think is pretty cool then post it here! No doubt some one will find it interesting.


I'll get the ball rolling with the Briggs-Rauscher Oscillating reaction. I'm by no means an expect on chemistry, but this is pretty awesome. Essentially iodine is being altered from existing as free atomic iodine to existing as part of a more complicated organic molecule in the form of iodide. What's cool is that the equilibrium of the reaction is so delicate that at room temperature there appears to be little preference between the reactants and the products, so it oscillates between the two. Here's a quick vid:

 

[SelimNiai]

So, we're a smart bunch of guy around here right? We've got people who have studied biology, chemistry, physics, maths, engineering, etc. Why not have a place to discuss them then eh? If you've got a topic to discuss or a question to ask or simply have an article or video that you think is pretty cool then post it here! No doubt some one will find it interesting.


I'll get the ball rolling with the Briggs-Rauscher Oscillating reaction. I'm by no means an expect on chemistry, but this is pretty awesome. Essentially iodine is being altered from existing as free atomic iodine to existing as part of a more complicated organic molecule in the form of iodide. What's cool is that the equilibrium of the reaction is so delicate that at room temperature there appears to be little preference between the reactants and the products, so it oscillates between the two. Here's a quick vid:

I'm not.

As such I have absolultley no idea what the blazes that meant and I fear I won't understand most of the posts that will be posted here

 

[Superalexmarket]

Perpetuum mobile does exist!... The Goverment, Oil Companys, CIA, M7, Mossad, DEA, and IRB hid this for centuries... open your eyes!!

 

[SelimNiai]

British astronomer and broadcaster Sir Patrick Moore has died at his home at the age of 89, his friends and colleagues have said.

Sir Patrick presented the monthly BBC programme The Sky At Night, first broadcast on 24 April 1957 - making him the longest-running presenter of the same television show in the world.

Sad news, I'm a bit of a space/star fan so it'll be odd to not see him on the TV every month. RIP

 

[Teh Mite]

RIP The Gamesmaster.

 

[Feicarsinn]

Well, this thread went morbid quickly.

RIP.


Oh, and Superalexmarket, a magnet has to be magnetized by an electric field and will eventually demagnetize. So nope, not buying it as a perpetual motion source.

 

[nickdnz]

I do Psychology at third year undergraduate level uni - do we wanna count that as science? I have a working level knowledge of biology and chemistry <_<. One thing I look at is selective attention bias (which is helpful to understand things like police lineups, learning and development etc). Anyway these were two videos that interested me at 100 level.

http://www.youtube.com/watch?v=vJG698U2Mvo - is an interesting one with a roughly 50% memory positive result.

 

[UlsterRugby2012]

I do Psychology at third year undergraduate level uni - do we wanna count that as science? I have a working level knowledge of biology and chemistry <_<. One thing I look at is selective attention bias (which is helpful to understand things like police lineups, learning and development etc). Anyway these were two videos that interested me at 100 level.

http://www.youtube.com/watch?v=vJG698U2Mvo - is an interesting one with a roughly 50% memory positive result.

Workings of the brain and consciousness - I guess it could have a place here

I've seen a video like that before - its so scary! Very interesting, I wish our school offered it as an A level then I would definitely take it.

 

[nickdnz]

Workings of the brain and consciousness - I guess it could have a place here

Haha - if you do it at university you discover that there is a snobbery within science. A lot of Bio students I know disregard it. A Psychology degree can get you a Bachelor of Science or a Bachelor of Arts - if you were going for a BA with a major in something like Biology, Chemistry, or Physics then it has to be an outside major. Much of this is due to Sigmund Freud and Psychoanalysis - but I totally agree that experimental psychology is obviously a science. Annoys me when people say otherwise.

 

[Feicarsinn]

Don't mind if they give you a BA or BSc. I get a BA in physics because the course is older than the BSc lark I think. Meh.

 

[dullonien]

Oh, and Superalexmarket, a magnet has to be magnetized by an electric field and will eventually demagnetize. So nope, not buying it as a perpetual motion source.

That's what I was thinking. Just because we can't obviously see, or measure the energy being used, doesn't mean it isn't still being used.

Someone might find this a little interesting. For one of my projects last year I was experimenting with old hard-drives and made this (video starts out with no sound, but it get's quite loud so watch out):

<embed width="600" height="361" type="application/x-shockwave-flash" allowfullscreen="true" allownetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf" flashvars="file=http%3A%2F%2Fvid61.photobucket.com%2Falbums%2Fh64%2Fdullonien%2FWP_20120301_143950Z.mp4">

Does the video work? It works for me whilst in the editor, but says video not found otherwise. Direct link:

http://s61.beta.photobucket.com/user/dullonien/media/WP_20120301_143950Z.mp4.html

 

[UlsterRugby2012]

Can't see either on my iPad Dullonien I'll have to look at it when I get on the computer.

I thought you'd appreciate this Feic. Basically avoids a ticket fining with Physics.
http://m.youtube.com/watch?v=YuhwmfXHmD4

 

[Draggs]

Exams this week, but when I have free time I can write some **** out about lift or engines or something to a similar extent. I'll have to try and record a flight sometime.

 

[Superalexmarket]

Oh, and Superalexmarket, a magnet has to be magnetized by an electric field and will eventually demagnetize. So nope, not buying it as a perpetual motion source.

I know that, it's an ironic post... Got it?

 

[Feicarsinn]

I know that, it's an ironic post... Got it?

Apologies, it's always hard to tell with new users.

 

[Superalexmarket]

Apologies, it's always hard to tell with new users.

Common sense is hard to find in old arrogant users...

 

[UlsterRugby2012]

Need some help from some people if possible!

tomorrow we've got a silly house competition for Technology and I haven't done it as a qualification - and I was entered and I'm a bit lost! I thought I'd go anyway since I do Physics at A level and it might help.

Basically we're all given the same materials - and we have to create a car, it's then let go on a slope and the car that goes the furthest wins.
I was just going to ask what would be the best way to maximize the distance? I was probably going to do some working out, with simple projectiles, resolving components and kinetic energy. But I just don't know where to start.
Like for example, should I make it really light or heavy? Or any design features to let it pick up more speed? Useful equations? I'm going to assume the angle of the slope is 30 degrees.

 

[nickdnz]

Common sense is hard to find in old arrogant users...

Bit uncalled for isn't it?

On a spectrum from sensible to a conspiracy theorist I had you further towards the latter.

 

[Feicarsinn]

Common sense is hard to find in old arrogant users...

What I meant was that I hadn't been able to get to know your sense of humour yet. I f you didn't know sarcasm doesn't trasnlate into text well so I hadn't had time to tell if you were just a guy making a joke or a bit mental.


As it transpires you're just a bit of a dick.

 

[Feicarsinn]

Need some help from some people if possible!

tomorrow we've got a silly house competition for Technology and I haven't done it as a qualification - and I was entered and I'm a bit lost! I thought I'd go anyway since I do Physics at A level and it might help.

Basically we're all given the same materials - and we have to create a car, it's then let go on a slope and the car that goes the furthest wins.
I was just going to ask what would be the best way to maximize the distance? I was probably going to do some working out, with simple projectiles, resolving components and kinetic energy. But I just don't know where to start.
Like for example, should I make it really light or heavy? Or any design features to let it pick up more speed? Useful equations? I'm going to assume the angle of the slope is 30 degrees.

What's your materials list? Pics if possible.