Things you always wanted to know the answer to [Vol. 2]

Things you always wanted to know the answer to [Vol. 2]

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Vipers

32,907 posts

229 months

Saturday 25th February 2012
quotequote all
Ma and Pa Kent found superman when he was a baby, as he grew he was known as Superboy, later on he became known as Superman, then what happened?

Why wasn't there a super granddad or something? One of life's little mysteries




smile

SC7

1,882 posts

182 months

Saturday 25th February 2012
quotequote all
Vipers said:
Ma and Pa Kent found superman when he was a baby, as he grew he was known as Superboy, later on he became known as Superman, then what happened?

Why wasn't there a super granddad or something? One of life's little mysteries




smile
Duh! Because he died of a heart attack in 2004.

deadtom

2,557 posts

166 months

Saturday 25th February 2012
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Use Psychology said:
hugo a gogo,

space isn't a perfect vacuum, even interstellar space (apparently) has a few atoms per cubic meter.

temperature is just a measure of the average kinetic energy of some matter.

so space definitely has a temperature.
this.

Hugo a Gogo

23,378 posts

234 months

Saturday 25th February 2012
quotequote all
hmm, the 'temperature' of each of those atoms or protons might be quite high, but you have zero pressure, to all intents and purposes, so the gas laws say you have zero temperature too, no?

surely your thermometer in space will go to zero (edit: Kelvin), if shielded from radiation, whilst surrounded by a few atoms at 1000K ?

Edited by Hugo a Gogo on Saturday 25th February 21:03

Vipers

32,907 posts

229 months

Saturday 25th February 2012
quotequote all
Hugo a Gogo said:
hmm, the 'temperature' of each of those atoms or protons might be quite high, but you have zero pressure, to all intents and purposes, so the gas laws say you have zero temperature too, no?

surely your thermometer in space will go to zero, if shielded from radiation, whilst surrounded by a few atoms at 1000K ?
If it does it will be absolute temperature, which is a long way away from zero on your thermometer.

Vipers

32,907 posts

229 months

Saturday 25th February 2012
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V8mate said:
Paddy_N_Murphy said:
But not from 'Heat' as you know it.
Ok. To summarise: in space the temperature is a fixed -270 degrees C. But you will fry to a crisp if you sail too close to the Sun?

Got it.
Didn't know that, so it's 3.15 degrees above absolute zero then.




smile

Vipers

32,907 posts

229 months

Saturday 25th February 2012
quotequote all
SC7 said:
Vipers said:
Ma and Pa Kent found superman when he was a baby, as he grew he was known as Superboy, later on he became known as Superman, then what happened?

Why wasn't there a super granddad or something? One of life's little mysteries




smile
Duh! Because he died of a heart attack in 2004.
You got me interested now, bit earlier apparently 1992.




smile

marshalla

15,902 posts

202 months

Saturday 25th February 2012
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Vipers said:
You got me interested now, bit earlier apparently 1992.

smile
That was Superdad - or was it SuperGreatGrandDad ?

Vipers

32,907 posts

229 months

Saturday 25th February 2012
quotequote all
marshalla said:
Vipers said:
You got me interested now, bit earlier apparently 1992.

smile
That was Superdad - or was it SuperGreatGrandDad ?
Who ever he was, he wasn't that super was he biggrin




smile

GroundEffect

13,844 posts

157 months

Saturday 25th February 2012
quotequote all
Hugo a Gogo said:
deadtom said:
CBR JGWRR said:
V8mate said:
CBR JGWRR said:
schmalex said:
What's the temperature in space?
-270 degrees celcius (ish)
Warmer as you travel closer to stars like the Sun, surely?
Yes, but in deep space...
heat energy travels through a vaccuum as electromagnetic radiation; it does not need a medium to travel through.

the temperature in deep space is roughly 3 Kelvin / -270C, but it can vary and as you might expect it gets warmer in the vicinity of hot objects like stars
how can the temperature of nothing (a vacuum) vary?

there is heat , but no temperature

temperature is a property of matter, a vacuum is the absence of any matter

heat is energy
Because Space isn't a vacuum...



R300will

3,799 posts

152 months

Saturday 25th February 2012
quotequote all
Vipers said:
V8mate said:
Paddy_N_Murphy said:
But not from 'Heat' as you know it.
Ok. To summarise: in space the temperature is a fixed -270 degrees C. But you will fry to a crisp if you sail too close to the Sun?

Got it.
Didn't know that, so it's 3.15 degrees above absolute zero then.




smile
You can never get to absolute zero.

LukeSi

5,753 posts

162 months

Saturday 25th February 2012
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GTIR said:
marshalla said:
GTIR said:
Crown and Mag' courts.

Why do they still use a bible to get people to swear on even though the people in it and taking the oath may not be religious?
There are several options - you can swear on the bible or other relevant holy book, or simply affirm (declare that you will tell the truth). My own preference is to use whichever version the jury (or bench) is likely to be expecting - I have no particular religious beliefs, but am paid to tell the truth.
Ahh I see.

Thanks. thumbup

(By the way. Your n-gate website doesn't format well on iPhone)
Could I swear on the PistonHeads logo? Would they accept PH?

DrTre

12,955 posts

233 months

Monday 27th February 2012
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Oil and gas are found in the Middle East.
The Middle East is a bit dodgy, stability wise.
Could someone, quietly, drill from a long, long, long way away and surreptitiously tap into the reserves?

Willy Nilly

12,511 posts

168 months

Monday 27th February 2012
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Can a man have too many tools?

Mr.Jimbo

2,082 posts

184 months

Monday 27th February 2012
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JonnyFive said:
Just read on google that apparently it's just a IR sensor and sender either side of the lamp.. Front picks up the signal from the rear of the one in front of it, flashes and sends a signal out of the back to the one behind it..
Sorry to bring this up again, hadn't noticed it had been discussed.

The thing is the whole light was purple, not just an IR transmitter... and the others were orange, don't *think* they were flashing, though I was in autopilot mode...

I think it's just whichever the traffic workers cones were favourites that day.

Merp

2,222 posts

253 months

Monday 27th February 2012
quotequote all
DrTre said:
Oil and gas are found in the Middle East.
The Middle East is a bit dodgy, stability wise.
Could someone, quietly, drill from a long, long, long way away and surreptitiously tap into the reserves?
Effectively yes....Fracking has come along way and you can now horizontally track through shale etc to extract gas/oil from a single wellhead. You would still have to be within 10km but it could become possible. Alot of heavy investment in Fracking at the moment....it's keeping us in business nicely anyway

AdeTuono

7,262 posts

228 months

Tuesday 28th February 2012
quotequote all
Merp said:
DrTre said:
Oil and gas are found in the Middle East.
The Middle East is a bit dodgy, stability wise.
Could someone, quietly, drill from a long, long, long way away and surreptitiously tap into the reserves?
Effectively yes....Fracking has come along way and you can now horizontally track through shale etc to extract gas/oil from a single wellhead. You would still have to be within 10km but it could become possible. Alot of heavy investment in Fracking at the moment....it's keeping us in business nicely anyway
So, no then. 10km hardly qualifies as a long, long long way away.

The way people keep harping on about fraccing (sic), you'd think it was the latest shiny technology. I remember the first time I ever went offshore in the early 80's they were unloading tons & tons of proppant for a frac job, and it wasn't new technology then.

Dr Jekyll

23,820 posts

262 months

Tuesday 28th February 2012
quotequote all
If a sliding car suddenly regains traction can it flip over?

I assume not because it never seems to happen to drifters unless they hit a curb or something. But I’ve seen a video of a historic racing car at a hillclimb appear to ‘highside’, though no doubt it had a very different C of G to a modern car.

OlberJ

14,101 posts

234 months

Tuesday 28th February 2012
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On historic cars you have a much higher sidewall to the tyres and more bounce as they flex. It would be that which would cause the old car to unsettle and highside rather than simply gripping all of a sudden.

As you say COG will be much lower on a modern car.

GroundEffect

13,844 posts

157 months

Tuesday 28th February 2012
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Dr Jekyll said:
If a sliding car suddenly regains traction can it flip over?

I assume not because it never seems to happen to drifters unless they hit a curb or something. But I’ve seen a video of a historic racing car at a hillclimb appear to ‘highside’, though no doubt it had a very different C of G to a modern car.
Depends on loads of factors. Road tyres don't offer enough traction to create a big enough moment/couple about the CoG to flip it.
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