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Chemistry / Where do the bubbles come from in fizzy drinks like coke, sprite, beer etc?

« on: 16/04/2010 22:01:15 »

Well not entirely where do the bubbles come from but if you have a pint of beer at a pub or whatever drink you drink, a fizzy drink, when you look at the bubbles that appear from the glass they just appear out of nowhere from fixed positions. Why does this happen? Why do they not come from random places all the time?

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Physiology & Medicine / Why can you see things when you close your eyes and why can you hear silence?

« on: 16/04/2010 21:57:17 »

If it is pitch black or dark at night and you close your eyes why can you see little bright coloured dots like static. And if you look in the middle sometimes you can see like horizontal lightning bolts that come closer.

Why do we get this?

And when you are in a really quiet place where there is no sound whatsoever why is it that if you listen you can hear like a ringing noise in your ears?

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Physics, Astronomy & Cosmology / What would happen if you travelled to the edge of space?

« on: 03/04/2010 21:56:03 »

Would it be like a game of Asteroids where you pop out the other side or something like Earth where you just go round and round?

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Physics, Astronomy & Cosmology / What would constitute life on another planet?

« on: 03/04/2010 21:55:07 »

Would it be something simple like bacteria or would it be a more complex "being"?

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The Environment / What are the major effects of global warming?

« on: 03/04/2010 21:51:44 »

What does that mean?

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Physics, Astronomy & Cosmology / Is travelling at the speed of light really such a good idea?

« on: 03/04/2010 21:44:39 »

Yet we only know these things so far right? You are all pretty much saying that laws of physics can't be bent or broken. But there are so many things undiscovered yet that we don't even know about. So why does the impossible remain impossible when all avenues haven't been explored yet. We only deem it impossible from what we have learnt so far.

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Technology / What things do I need to know before making my own electricity?

« on: 03/04/2010 21:39:51 »

Well....I suppose waste not want not.

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Physics, Astronomy & Cosmology / Is travelling at the speed of light really such a good idea?

« on: 31/03/2010 23:00:06 »

NO  the main point is that objects with mass just cannot travel AT the speed of light. they can only travel at just below the speed of light and whatever speed you are doing light appears to pass by in any direction AT the speed of light.

That is what relativity is all about

Well unfortunately, I'm not that well educated in the laws of physics so I don't know what relativity is all about. I still don't understand though. If you are travelling at 60 mph in a car and a car over takes you going at 70 mph would it not seem the same as if you are standing still and a car travels past you at 10 mph? Why does this not work if you were in space and travelling just below the speed of light and a light ray went past you?

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Technology / What things do I need to know before making my own electricity?

« on: 31/03/2010 22:55:53 »

Hmm. To be honest I think exercise equipment should be incorporated into places like gyms where they just have rows and rows of cycling machines, cross trainers, treadmills etc. That way the electricity would soon build up right?

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The Environment / What are the major effects of global warming?

« on: 30/03/2010 22:20:55 »

=]

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Physics, Astronomy & Cosmology / What would happen if one of the "gas giant" planets exploded?

« on: 30/03/2010 22:11:55 »

Would it even be possible for an explosion in space because it's a vacuum right?

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Technology / What things do I need to know before making my own electricity?

« on: 30/03/2010 22:09:55 »

Soooo...all in all would it be worth it? Would the monetary cost of creating the device get anything back? So, if it takes £1,000 to build would you get that £1,000 back eventually through electricity saved? My first thoughts on this are probably yes over like a century. But then my second thought is that it probably isn't even worth it because no matter how much we try to save energy the blasted energy companies keep putting the costs up.

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Technology / Is it possible to create a machine that produces crude oil?

« on: 30/03/2010 22:03:55 »

Would it not be possible then to use a machine that uses the earth's heat or would the material be too weak and melt?

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Physics, Astronomy & Cosmology / Is travelling at the speed of light really such a good idea?

« on: 30/03/2010 21:59:04 »

I mean, yeah it would be awesome if space craft could travel at the speed of light but if you are travelling at such speed, 299,792,458 metres per second, how much damage would be caused to the craft if you hit a rock the size of a fist or something?

Would your reactions need to be that of a fighter pilot or Formula 1 driver or even better than that?

Presumably a defence mechanism would need to be introduced to deter space debris right?

Well, it all depends on what do you exactly mean with "299,792,458".
Do you mean that speed with an uncertainty on the last figure, as we do in physics with measured values? Or do you mean "exactly light speed"?

Erm, the number I got was from wikipedia  [] it said lightspeed was 299,792,458 metres per second.

All the other posts I'm afraid flew right over my head. Sorry.

So on really really basic terms like primary school terms. If it were possible to travel at the speed of light without suffering any damage at all to the space craft, when you look out the window of the space craft would it all be just lines and lines of light everywhere and if you were travelling parallel to a beam of light would it appear as though it is in a static position?

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Physics, Astronomy & Cosmology / What would happen if one of the "gas giant" planets exploded?

« on: 29/03/2010 17:35:10 »

Would it cause our planet to become dislodged in the solar system?

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Physics, Astronomy & Cosmology / Is travelling at the speed of light really such a good idea?

« on: 29/03/2010 17:32:13 »

Blimey. Not such a gopd idea then. What kind of speed would be deemed "safe" in space?

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Just Chat! / Have you seen the film "Knowing"?

« on: 29/03/2010 17:29:04 »

I thought Knowing was okay. It didn't give me nightmares or anything. Paranormal Activity was pretty good. My girlfriend kept making me jump though when she screamed her head off!

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That CAN'T be true! / Why do men spend longer on the toilet?

« on: 29/03/2010 17:26:44 »

They are probably reading the newspaper.

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Technology / Is it possible to create a machine that produces crude oil?

« on: 29/03/2010 17:25:32 »

Not a machine that creates a synthetic type of crude oil but a machine that you put dead organisms in to and then it gets heated and put under extreme pressure over a period of time. I suppose a machine that is capable of creating crude oil the same way natural crude oil is made but in a speeded up version?

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Physics, Astronomy & Cosmology / Is travelling at the speed of light really such a good idea?

« on: 29/03/2010 17:14:41 »

I mean, yeah it would be awesome if space craft could travel at the speed of light but if you are travelling at such speed, 299,792,458 metres per second, how much damage would be caused to the craft if you hit a rock the size of a fist or something?

Would your reactions need to be that of a fighter pilot or Formula 1 driver or even better than that?

Presumably a defence mechanism would need to be introduced to deter space debris right?