41

Physics, Astronomy & Cosmology / what is a shockwave made of ?

« on: 03/06/2013 14:30:30 »

When a bomb goes off and a shockwave is produced what would cause damage the energy or the air that is around being affected by it? If a bomb went off in space where there is no atmosphere how would that energy move from its origin, and if it was a nuke and could be made super efficient to a point where pretty much no mass was left what would the energy release do with no particle to convey it.

Cheers
Ace

42

Physics, Astronomy & Cosmology / Could there be two sides to our universe?

« on: 03/06/2013 14:08:22 »

Would it be possible that our universe is in two parts? One being what we observe around us and another being some form of information telling the first side how to behave such as with regards to gravity or matter and energy.

Cheers
Ace

43

Physics, Astronomy & Cosmology / What could produce a bright dot just above the moon?

« on: 26/12/2012 00:33:48 »

Ive just been outside and was looking at the moon which is nearly full and about 4/5 the diameter away is a bright dot like a star above it. Im surprised how bright it is in the glare of the moon. im in birminghm in the uk and the time is 00:33am. Although the camera on my phone is not great ive tried to take a picture which i will post

44

Physics, Astronomy & Cosmology / Re: if we travelled near light speed to another planet....

« on: 15/10/2012 16:49:58 »

im beginning to feel spoilt lol

45

Physics, Astronomy & Cosmology / Re: if we travelled near light speed to another planet....

« on: 15/10/2012 16:05:40 »

Thanks yor_on excellent link

Its not what i was expecting, i think i like things as they are ....

46

Physics, Astronomy & Cosmology / Re: if we travelled near light speed to another planet....

« on: 14/10/2012 18:15:21 »

thanks for the link.....i was expecting we would see galaxies rotating like water going down a spout.

47

Physics, Astronomy & Cosmology / Re: Big Bang: How Did Life Begin if Everything Was Sterile?

« on: 11/10/2012 14:46:18 »

I see where your coming from ophiolite, stars do evolve in a sense but to compare that evolution to life concerns me.

A star will go through several defined periods of its existence but id say life has some very fundamental properties which nothing "unliving" can have. Using stars as an example, they do the same now as they allways have in the foreseable past.

Compared to a living being they are born and go through all their different stages to death, but if you see my point they are not changing from one generation to the next becoming more complex ie as we have gone from being monkeys who walked on all fours to people who can communicate.

Moving on id say the point of life starts when conciousness is first available. Without this i dont believe a soup of chemicals can know to evolve. Reactions can take place between elements and molecules through the laws of physics and chemistry but for a structure to know it must evolve is something more.

48

Physics, Astronomy & Cosmology / Re: why does light need a speed?

« on: 11/10/2012 14:04:33 »

I just read over what i wrote...if i could explain things as i see them in my mind things would be so much easier. Ive had to stop as its almost becoming if it hasnt gone beyond a new theory already.......


Its almost asthough a photon is more of a consequence than a particle like gravity is a consequence of mass. Im wondering if its possible not that i think it could be proved right now that when we see light were seeing the effect of something we cannot observe. Although it sounds ridiculus what makes us see light is on the otherside or behind our universe if that makes sense. If you imagined the universe as being on top of sheet of paper, something emits a photon at which point the underside of the paper then passes a signal to another point on the paper which pings a photon on the top side of the paper.

If you imagine we could see gravity as we see light the equivalent would be like not seeing the sun but feeling its gravity. 

Cheers

Ace

49

Physics, Astronomy & Cosmology / why does light need a speed?

« on: 10/10/2012 16:57:26 »

If light is a constant and is allways observed the same by every observer to take a certain amount of time to get anywhere why does it need to have a speed.

It seems to me that we measure a time for light to travel from an event to an observer and assume then that it has a particular speed the same as we would for a vehicle travelling down a road from a starting point to a destination but if that speed we believe is taking place then it should be the same for light as it is for everything else.

So is it possible that anything beyond the speed of light in reality doesnt have a speed anymore and that speed/velocity is only available to objects travelling below it?

Cheers

Ace

50

Physics, Astronomy & Cosmology / if we travelled near light speed to another planet....

« on: 10/10/2012 12:17:41 »

If we travelled near light speed and we stood in the spaceships window what would we see?

Cheers

Ace

51

Physics, Astronomy & Cosmology / earths age 6000 years or 4.5 billion?

« on: 10/10/2012 12:10:51 »

Can someone tell me if the earth was measured by a certain group of individuals to be 6000 years old at what speed would they need to be travelling for relativity to mean the rest of us believed the earth was 4.5 billion years old.

Cheers

Ace

52

Physics, Astronomy & Cosmology / if i stand inside a sphere.....

« on: 10/10/2012 12:04:18 »

If you take a sphere and stand inside could you not say that the entire universe is contained within the surface area of that sphere as you look around the inside?

Cheers

Ace

53

Physics, Astronomy & Cosmology / Re: Big Bang: How Did Life Begin if Everything Was Sterile?

« on: 08/10/2012 15:45:00 »

So are you saying water is alive then or partly alive?

I think lifes a little like a painting you can have as many paints as you like but you dont have a picture the euivalence of the the painting is the inteligence part or life.

The letter 'e' is just a letter but a story is something else dont you think?

As for stars once again are they alive? i dont think so like the explanation i gave above they are merely the paint and not the picture.

54

Physics, Astronomy & Cosmology / Re: Big Bang: How Did Life Begin if Everything Was Sterile?

« on: 06/10/2012 21:30:05 »

Do you consider 3,500,000,000 years plus a miniscule amount of time. If we consider the first eukaryotes came in around 2 billion years ago and the average generation time for a prokaryote is one hour, then that's 1.3 * 10^13 generations to develop all the interesting stuff.

To even get to any complexity at all i find amazing in any given amount of time. On some level where life started the very fact that it knew it needed to evolve at all is odd. None of the elements evolve chemical molecules dont evolve as im aware water has never evolved since it was first created. Stars dont evolve. All these things have a cycle but they dont slowly change into other things so no 2 billion years isnt that long.

55

Physics, Astronomy & Cosmology / The sky lift in relation to Relativity

« on: 01/10/2012 11:18:01 »

If a sky lift were made into space, as has been a topic of conversation on here numerous times, how would relativistic effects impact on such an idea.

If we take the example that GPS satelites in space have to be compensated every day for the effects of relativity or would be upto 10km out of position would this not happen to our lift?

Cheers Ace

56

Physics, Astronomy & Cosmology / Re: How and Why could Expansion of Space/Time Exceed the Speed of Light?

« on: 28/09/2012 14:22:04 »

This is not exactly how it sounds...

When we say an object has motion, we’re referring to its change in position relative to the space-time grid. The speed of light is only a constraint for objects that exist within space-time, not for space-time itself.

Ace

57

Physics, Astronomy & Cosmology / Re: Could our universe be similar to looking under a superpowerful microscope

« on: 28/09/2012 14:06:33 »

Hi antic,

If its true lets hope the big people in the universe above us don't send us round a particle accelerator it could get messy... !!!


HAHAHA

Ace

58

Physics, Astronomy & Cosmology / Re: Big Bang: How Did Life Begin if Everything Was Sterile?

« on: 28/09/2012 14:02:19 »

What a fasinating subject we have here....

To take the nuts and bolts of this topic that particles can be arranged in such a way so as to be able to attempt to understand themselves is brilliant, i.e humans.

I find the idea of how we are, where we are in evolution at this point extremely hard to believe. I mean in such a miniscule amount of time we have become the machines we are. Not just a form of life or an arrangement of particles but a machine that has a conscious, but not just that, a machine that interacts with itself on a biological level of phenominal complication as any good medical physiology book will emphasise.

Assuming that evolution is not near its end the future of life and this universe and its connection are something to behold .....


Ace

59

Physics, Astronomy & Cosmology / Could our universe be similar to looking under a superpowerful microscope

« on: 28/09/2012 13:26:55 »

I know this sounds odd but has anybody a scientist etc ever considered that the universe may be like something extremely small and that if ever we were to get a microscope powerful enough we could look right into an object and see something that looked like a universe.


Maybe im talking total waffle haha

Any thoughts are welcome

Cheers Ace

60

Physics, Astronomy & Cosmology / could our atmosphere be blown away?

« on: 28/08/2012 11:22:05 »

Is it possible that a cloud of gas traveling through our solar system could blow the atmosphere of our planet?


Any thoughts

Cheers Ace