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Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 14:18:48 »
Exactly.
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42
New Theories / Could we make solar panel flowers?
« on: 03/04/2011 14:01:27 »
Batteries are woefully heavy and inefficient, why on earth would you try to charge them not on earth?
He said power not electricity.
Umm beaming electricity seems a bit dodgy.
He said power not electricity.
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Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 13:44:15 »
Then why is it relevant whether BC has signal problems
Whether a phone has GPS capability or not has nothing to do with whether it can transmit or not
Whether a phone has GPS capability or not has nothing to do with whether it can transmit or not
44
General Science / If we build too many Wind farms is there a danger we would slow the earth down?
« on: 03/04/2011 13:36:42 »Umm why would the the weather systems north and south of the equator turn in opposite directions, when the earth turns in one direction?
Surely they would both turn in the same direction, if it was soley down to the earths spin?
No, different directions. The mirror image of a word is in a different direction, the same will apply with the coriolis effect.
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Well there is magnetics that changes the north and south
The earth has a magnetic field yes, what do you mean by "changes the north and south"?
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the earth spins on a axis, meaning that the lower hemisphere is more shielded from the solar winds
Why?
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and the upper hemisphere would bare the brunt, north would be slightly hotter and the south slightly cooler
What do you think is happening when the seasons change?
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gravation might play more of a role on the lower hemisphere than the northern also
Why?
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These things are always interconnected so, not being a wether man, I'm not entirely sure but I don't "think" it's down to the earths spin so much, Magnetics I think would be playing more of a role, the magnetic influence on the gas atoms.
How does magnetism effect gas atoms?
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Umm, reducing friction on the statusphere, leaving it to be more influenced by gravity, so turn in a direction the same as the earth
Gravity pulls down, not sideways.
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where as the troposhere wouldn't be
If there was some effect why wouldn't it apply to the troposphere too?
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Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 10:57:19 »
We weren't talking about satellite phones.
46
Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 10:25:05 »
They do not. They transmit to the nearest tower, and from there the signal is forwarded elsewhere.
47
New Theories / How photo travell and how it store to our brain?
« on: 03/04/2011 07:51:41 »
I'm not really sure what you're trying to ask, but the object absorbs some frequencies of light and reflects others. The frequencies it does reflect may then be absorbed by your retina and interpreted as a certain colour.
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Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 07:46:23 »
We got there in the end 
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Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 07:45:19 »
Did someone say black helicopters?! Where?! where are they!? Where's my aluminium foil
50
Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 07:43:26 »The difference between one plane trying to take off on a normal runway and another trying to take off on a conveyor belt will be as insignificant as one ball rolling down a rising escalator and another ball rolling down an escalator that is turned off.
One example gets acceleration from gravity, the other from jet engines.
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Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 07:39:40 »They use ground friction too, don't they?
No. Air movement.
The friction slows them down slightly yes, but that is not where their acceleration force comes from.
52
General Science / If we build too many Wind farms is there a danger we would slow the earth down?
« on: 03/04/2011 07:25:44 »
Well we've already built far more buildings that slow down wind than we ever will windmills, and long before that there's been cliffs and trees and mountains.
53
Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 07:18:19 »Take a cyclist sitting on his bike, take yourself running on a treadmill.
Exactly how do you see that differing from using a propeller to get that forward moving force?
As long as you're still on that treadmill?
The propeller does not depend on ground friction to move. The runner and the cyclist do.
54
Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 07:07:36 »
The difference between one plane trying to take off on a normal runway and another trying to take off on a conveyor belt will be as insignificant as one ball rolling down a rising escalator and another ball rolling down an escalator that is turned off.
One example gets acceleration from gravity, the other from jet engines.
One example gets acceleration from gravity, the other from jet engines.
55
New Theories / Does the future already exist?
« on: 03/04/2011 07:01:56 »Now one twin decides to go on a short trip at 90% C. That twin trades some of his time velocity for space velocity to move away from his twin. Now they are NOT both moving through time at the same velocity
I'm not sure I understand you properly, but are you implying then that time is not relative, but there is some sort of absolute standard of time? And one of the twins is going faster than the other, rather than just relative to each other?
56
New Theories / Does the future already exist?
« on: 03/04/2011 06:51:36 »
So you're saying that god is outside logic so he can do anything even if it doesn't make sense.
If that's the kind of "explanation" (or non-explanation) that satisfies you then you're welcome to it.
But since debates are based on reason, and your arguments are outside of reason, you are also outside of the debate.
If that's the kind of "explanation" (or non-explanation) that satisfies you then you're welcome to it.
But since debates are based on reason, and your arguments are outside of reason, you are also outside of the debate.
57
Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 06:36:33 »""Bored Chemist said no you didn't need a map and that GPS could tell you where you were any where in the universe. "
Oh no I didn't.
Oh yes you did!"
OK, for a start either show a quote where I said that or leave.QuoteI said "have a complete map of the moon."
Nope, you can use a coordinate system based on earth anywhere, including the moon."
You said nope you do not need a map
Where did he say that GPS could tell you where you were anywhere in the universe? I don't see it.
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QuoteA coordinate system based on earth (the one I had in mind was latitude, longitude and altitude) which can be used to pinpoint any place in the universe.
Even though we do not actually know how big the universe is or what it really looks like!
That's irrelevant, the coordinates are still plottable.
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Oh really you never get signal problems?
Are you also labouring under the delusion that a mobile phone transmits directly to the satellites?
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Physics, Astronomy & Cosmology / Would my GPS device work on the moon?
« on: 03/04/2011 06:26:18 »The "Dark Side of the Moon" has nothing to do with the sun or illumination.
Rather, the moon is tidally locked with the earth. One side of the moon always faces the earth. One side (the dark side) always faces away from the earth. Thus, if you were on the side of the moon facing away from Earth... the GPS satellites would be useless.
Doesn't the term "dark side of the moon" in itself imply it is to do with illumination? Unless it is meant that that side is evil. "Far side of the moon" I would accept, but I disagree that the dark side of the moon is the side facing away from earth.
The dark side of the moon is the side facing away from the sun. If you've ever seen a half-moon you'll know that the dark side of the moon is still visible from earth.
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Just Chat! / Will German voters eventually change their minds?
« on: 03/04/2011 06:07:52 »The problem with global warming is that we do not really know why it is is happening - although there is no doubt in my mind why the warming has excellerated: US HUMANS.
Then it becomes a debate about whether it is c02 that causes global warming and not nuclear power.
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It was only 13,000 years ago that glaciation had frozen in the atlantic down to the middle of the UK & France &c.
When there was less c02? What's your point?
To me the physics of it makes it seem obvious that increased c02 must cause warming, but we have probably derailed the thread enough already.
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Physics, Astronomy & Cosmology / Can an aeroplane on a conveyor belt get airborne?
« on: 03/04/2011 05:54:06 »No, it would not!! You seem to be making a very bad assumption about how much friction wheels produce. They are hardly any different from ice skates.
The amount of thrust that the engines have to produce to overcome the rolling resistance of the wheels is negligible compared with the thrust required to accelerate the mass of the plane and the thrust required to overcome wind resistance.
Indeed. You could stand at the back of the conveyor belt and hold the plane on it
yor_on, if you rolled a toy car down an escalator do you really think it's going to go much slower than if the escalator was turned off?