OT Olympic ceremonies and flashes

MartinM said:

Always makes me laugh when I see millions of flashguns go off as
spectators try to capture some dark (or even light) far off thing with
a flashgun, all they will get is the bald head of the bloke 3 rows in
front. Or in the case of the London Eye, themselves reflected in the
pod ;-)

They don't call it "idiot mode" for nothing :-)
--
Phil Cook looking north over the park to the "Westminster Gasworks"

quote='Phil Cook'On 29 Aug 2004 11:49:13 -0700 said:

Always makes me laugh when I see millions of flashguns go off as
spectators try to capture some dark (or even light) far off thing with
a flashgun, all they will get is the bald head of the bloke 3 rows in
front. Or in the case of the London Eye, themselves reflected in the
pod ;-)

They don't call it "idiot mode" for nothing :-)
--
Phil Cook looking north over the park to the "Westminster Gasworks"[/QUOTE]
One of the memorable moments of the 99 eclipse totality (as I saw bugger all corona) was of all of Torbay alight with flashes; didi they thaink the flash would reach 94m miles?

MartinMM said:

One of the memorable moments of the 99 eclipse totality (as I saw
bugger all corona) was of all of Torbay alight with flashes; didi they
thaink the flash would reach 94m miles?

Of course it would. What they didn't take into account was that it
would take 8 minutes to do so but their shutter speed was only 1/125
of a second.

Tim

MartinMM said:

Quoted message said:

did they think the flash would reach 94m miles?

They of course did reach!

--
Kev

"Kevin Stone" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

MartinMM said:

Quoted message said:

did they think the flash would reach 94m miles?

They of course did reach!

but by the time they came back the shutter would have been closed
(1002 seconds before) have I got that right?

94 million x 1600m x2

3x10(8) m/s

MartinM said:

"Kevin Stone" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

MartinMM said:

>did they think the flash would reach 94m miles?

They of course did reach!

but by the time they came back the shutter would have been closed
(1002 seconds before) have I got that right?

94 million x 1600m x2

3x10(8) m/s

<physics pedant>
But they would never get back because the sun being a black body would
absorb them all.

Of course if they were hoping to light up just the moon they would have
had better success ;-)

</physics pedant>

Tony

Tony Raven said:

But they would never get back because the sun being a black body would
absorb them all.

They'd enter the outer surface of the sun and drift gently toward the centre
encoutering collisions on the way, but they'd be on their way back out in a
few million years - and if you're really lucky, the Earth will be in the
correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

--
Kev

"MartinM" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Always makes me laugh when I see millions of flashguns go off as
spectators try to capture some dark (or even light) far off thing with
a flashgun, all they will get is the bald head of the bloke 3 rows in
front. Or in the case of the London Eye, themselves reflected in the
pod ;-)

I had an e-mail read out on TeamTalk 252 about this very thing. You can hear
it here:

http://home.unitynet.co.uk/swldxer/JHRFlash.mp3

--
Simon M.

Kevin Stone said:

Tony Raven said:

But they would never get back because the sun being a black body would
absorb them all.

They'd enter the outer surface of the sun and drift gently toward the centre
encoutering collisions on the way, but they'd be on their way back out in a
few million years - and if you're really lucky, the Earth will be in the
correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

Kevin Stone said:

Tony Raven said:

But they would never get back because the sun being a black body would
absorb them all.

They'd enter the outer surface of the sun and drift gently toward the centre
encoutering collisions on the way, but they'd be on their way back out in a
few million years - and if you're really lucky, the Earth will be in the
correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

As photons are bosons they are not conserved. Thus they will enter the
sun and be absorbed into the plasma thereby raising its temperature ever
so slightly, never to be seen again. Just like the light from a candle
flame is not stored light from the match that lit it.

Tony

Simon Mason said:

I had an e-mail read out on TeamTalk 252 about this very thing. You can hear
it here:

Very good of them to convert your metres to yards for us "normal" folk.

Nnnnnnnnnnnnnnnnnnnnnn!

d.

quote='davek'Simon Mason said:

I had an e-mail read out on TeamTalk 252 about this very thing. You can hear
it here:

Very good of them to convert your metres to yards for us "normal" folk.

Nnnnnnnnnnnnnnnnnnnnnn!

d.[/QUOTE]
These are people who don't do Audax!
Actually Simon has replied to this but due to google groups 2 the thread has split, sorry, write 100 times:
I must get a newsreader
I must get a newsreader

in message <[email hidden]>, Tony Raven

(') said:

Kevin Stone said:

Tony Raven said:

But they would never get back because the sun being a black body
would absorb them all.

They'd enter the outer surface of the sun and drift gently toward the
centre encoutering collisions on the way, but they'd be on their way
back out in a few million years - and if you're really lucky, the
Earth will be in the correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

As photons are bosons they are not conserved. Thus they will enter
the sun and be absorbed into the plasma thereby raising its
temperature ever
so slightly, never to be seen again. Just like the light from a
candle flame is not stored light from the match that lit it.

You're all wrong anyway as the light from the flashes could never reach
the sun. The moon was in the way!

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; "If I were a Microsoft Public Relations person, I would probably
;; be sobbing on a desk right now" -- Rob Miller, editor, /.

Simon Brooke said:

in message <[email hidden]>, Tony Raven

(') said:

Kevin Stone said:

Tony Raven said:

But they would never get back because the sun being a black body
would absorb them all.

They'd enter the outer surface of the sun and drift gently toward the
centre encoutering collisions on the way, but they'd be on their way
back out in a few million years - and if you're really lucky, the
Earth will be in the correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

As photons are bosons they are not conserved. Thus they will enter
the sun and be absorbed into the plasma thereby raising its
temperature ever
so slightly, never to be seen again. Just like the light from a
candle flame is not stored light from the match that lit it.

You're all wrong anyway as the light from the flashes could never reach
the sun. The moon was in the way!

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; "If I were a Microsoft Public Relations person, I would probably
;; be sobbing on a desk right now" -- Rob Miller, editor, /.

You could get the prominences ;-)

Quoted message said:

Quoted message said:

Always makes me laugh when I see millions of flashguns go off as
spectators try to capture some dark (or even light) far off thing with
a flashgun,

They don't call it "idiot mode" for nothing :-)

Inside the Camera Obscurer in Edinburgh, while sitting in darkness being
shown a projected image on the screen, some misguided lady took a photo
using flash. Of course, the flash lit up the room and obliterated the
image. No doubt it was a good picture of a group of people watching a blank
screen.

Kev

"Tim Hall" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

MartinMM said:

One of the memorable moments of the 99 eclipse totality (as I saw
bugger all corona) was of all of Torbay alight with flashes; didi they
thaink the flash would reach 94m miles?

Of course it would. What they didn't take into account was that it
would take 8 minutes to do so but their shutter speed was only 1/125
of a second.

<pedant>
The flash has to travel to the subject and back to the camera. So it's 2 AU, or
186 Mega-miles, or in other words about 1 kilo-light-second.
</>

This is a cycling newsgroup. So please make sure to keep your physical
calculations accurate :-)
--
Mark South, Super Genius: World Citizen, Net Denizen

Kev said:

> >Always makes me laugh when I see millions of flashguns go off as

Quoted message said:

Quoted message said:

spectators try to capture some dark (or even light) far off thing with
a flashgun,

They don't call it "idiot mode" for nothing :-)

Inside the Camera Obscurer in Edinburgh, while sitting in darkness being
shown a projected image on the screen, some misguided lady took a photo
using flash. Of course, the flash lit up the room and obliterated the
image. No doubt it was a good picture of a group of people watching a blank
screen.

Kev

presumably with the advent of digital cameras this sort of thing should decrease as you will be able to see the results of your folly immediately?

MartinMM said:

Kev said:

Quoted message said:

>Always makes me laugh when I see millions of flashguns go off as
>spectators try to capture some dark (or even light) far off thing

with

Quoted message said:

>a flashgun,
They don't call it "idiot mode" for nothing :-)

Inside the Camera Obscurer in Edinburgh, while sitting in darkness
being
shown a projected image on the screen, some misguided lady took a photo
using flash. Of course, the flash lit up the room and obliterated the
image. No doubt it was a good picture of a group of people watching a
blank
screen.

Kev

presumably with the advent of digital cameras this sort of thing
should decrease as you will be able to see the results of your folly
immediately?

No, it will increase as the camera user looks at the results of their
first shot, sees a picture of a group of people watching a blank
screen and takes another picture oblivious as to the reson of the
failure of the first shot.

Tim

On Mon, 30 Aug 2004 10:35:02 GMT, Simon Brooke <[email hidden]>
wrote (more or less):

Quoted message said:

in message <[email hidden]>, Tony Raven

(') said:

Kevin Stone said:

"Tony Raven" wrote:

>But they would never get back because the sun being a black body
>would absorb them all.

They'd enter the outer surface of the sun and drift gently toward the
centre encoutering collisions on the way, but they'd be on their way
back out in a few million years - and if you're really lucky, the
Earth will be in the correct place (and of course your camera).

As long as your camera has a bulb setting, you should be OK.

As photons are bosons they are not conserved. Thus they will enter
the sun and be absorbed into the plasma thereby raising its
temperature ever
so slightly, never to be seen again. Just like the light from a
candle flame is not stored light from the match that lit it.

You're all wrong anyway as the light from the flashes could never reach
the sun. The moon was in the way!

Maybe he was going for gravitational lensing?

--
Cheers,
Euan
Gawnsoft: http://www.gawnsoft.co.sr
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