"Top Gear" in the UK does not HAVE commercial breaks! It's made by and shown on, the BBC, whose main TV stations have no adverts at all (except for their own forthcoming shows).
When "Top Gear" is repeated on other, commercial channels, then yes, there are advert breaks.
Conventional wisdom was that the lunar distance ranging, using the lunar retroreflector arrays, averaged 1 photon or less returned to the Earth detector, per outbound laser pulse.
Now presumably, this 622 Mbit/sec was outbound only (Earth to Moon) and not a return trip. So that will help quite a lot.
But to get these remarkable bandwidths, the Earth-based laser and beam expander/collimator must be pretty special.
Does anyone know the juicy figures like: Laser wavelength, energy per pulse, pulse rep rate, and so on? Oh, and the strength of the signal received at the moon, in (I dunno) photons-per-bit or something?
Re: Location:
Wrong. The entire UK grid is "locked together" and it all runs at the same frequency. Necessarily.
Also: Recorder doesn't need to be plugged into the mains. 50Hz hum permeates the space around us. Try grabbing hold of an oscilloscope lead and look at how much 50Hz hum you are "carrying". Unless you're a long way from mains outlets, it's a lot.
There is this global media obsession with referring to Mars as "The Red Planet". It is really irritating.
Mars has a name, just like all the other planets in our solar system: Its name is "Mars". So use it, and respect the planet and its name.
It's so irritating and "media lovvie". Also, the planet it not really "red" at all. It's brown. It belongs in exactly the same category as media types referring to scientists as "boffins". It's RUDE and DISRESPECTFUL.
I wish the media would shed this ridiculous obsession with ignoring the name of the planet MARS.
For exactly the same reason that you can't fit an infinite number of AM radio stations into a finite width of radio spectrum.
The act of AM-ing a single frequency carrier f_c at data rate / frequency f generates sidebands each side of the carrier, so that the signal now spreads over (f_c - f) to (f_c + f), i.e. the bandwidth becomes (IIRC) 2f.
Fleetie
The concentrated spot of light cannot even be quite 1 x the brightness of the sun. Never mind ">5000 times brighter".
The laws of thermodynamics say so.
You cannot focus an image of a light source so as to make the intensity at that focus more intense than the light source itself.
Kudos for good execution of his idea, but that ">5000 times brighter" claim is just plain wrong.
That's what this seems to rely on: The conversion of methane (CH4) to CO2 by combustion. Is CH4 a more powerful greenhouse gas than CO2?
I seem to remember it is, but I'm not sure.
Why are LLR returns always exactly 1 photon per shot? I see no reason why that should be true. Also, I read that the American ones used to return 1 photon back per shot sometimes?
"The Apollo's Guidance Computer was a snail-like 1.024 MHz in comparison, and it's external signaling was half that -- actually measured in Hz (1/1000th of 1 MHz, much as 1 MHz is 1/1000 of 1 GHz)."
FAIL!
What about black holes NOT from the centre of galaxies? Fairly normal large (massive) stars end up as black holes too, so I'd expect a lot of black holes in this galaxy anyway, even if it hadn't interacted with any other galaxies.
Got Brain Damage, have we?! I see the pigs are on the wing again!
I mean sure, there is always a DSOTM, but the pesky thing is always moving!
BTW, who reckons that Waters' recent errant flying pig was a deliberate stunt; a reprise of the simimar incident in London in 1976 (IIRC); and NOT an accident?
Anyway I'm typing this on a 21" Iiyama trinitron monitor at 1920*1200 resolution, and very nice it is too.
I also have a 10-year-old Sony trinitron TV at home. It's needed repair once, but the original tube is still fine. It's going to be a while (I hope) before I need to buy an LCD monitor or an LCD/plasma TV. That suits me fine.
Isn't there a way to set up Slashdot so that I can not have to see any comments labelled "Funny"? Because they're about as funny as a kick in the teeth, and serve only to mark out the less-educated "members" (and I do mean "members"). Pearls before grunting swine - really. Mod me down as much as you like; it's true. Grunting, baaa-ing, bleating ignoramuses who can only react to interesting stories by posting silly quips. It's like fucking Pink Floyd "Animals" in here. Baaaaaa!
Admins: Please do consider implementing a killfile system based on how articles are labelled. I'm absolutely sure many of the less-stupid readers would very much appreciate not having to sift through the 90% of comments that are posted by the ill-educated unwashed and labelled by their peers "Funny".
Wouldn't it be ironic if some of those cretins labelled this comment "Funny"?!
>The inverse square law only applies to an isotropic source - a light that's being emitted in every
>direction (like a candle). This is why lasers stay bright at a distance.
Utter, utter nonsense. Lasers in the far field follow inverse square too. This applies when they shine lasers at the retroreflectro array on the Moon.
The beam diverges at (say) 1mR, so at 1km, the beam might be (say) 1m^2 in "area". The intensity there will be 1Wm^-2 if the laser is a 1W laser. At 2km, the beam will be twice as wide, so the area projected onto a screen at 2km will be 4m^2, so the intensity will be (1/4) Wm^-2. WELCOME TO THE INVERSE SQUARE LAW.
Who on EARTH modded this guy up to +4, Insightful?!
Oh, wait, this is SlashDork.
Parent : PLEASE go to alt.lasers and educate yourself.
Back in 1982 or 1983, when I had a Dragon 32, which output its video and audio via a UHF modulator to a TV, I noticed that various on-screen black-and-white (especially) patterns would cause buzz to come through on the TV audio channel (through which the Dragon's deliberate sound output also appeared).
Some reader of a Dragon-oriented magazine also noticed this, and submitted a program to draw such patterns to the screen as to cause a "tune" to be heard via the mechanism of this "buzzing" interference between video content and what came out of the TV speaker.
It sounded shit.
But it kinda "worked".
Fuck me; isn't there any way to filter out ALL comments modded "Funny"? Because
they aren't "funny"; they're asinine, and indicative of people who DON'T understand
the present subject, and can only grunt like pigs.
This is interesting; so STOP with the "funny" comments already.
Fuck, and I thought this was a forum for people with some intelligence and knowledge.
I thought I was going somewhere interesting, and I wandered into a pig farm, and now I'm
stinking and covered in shit and have gruntinnitus.
Free clue: If you're intending to post something with the hope that it be modded "funny", then
STOP NOW, because you're a sad 'tard that needs at least a damn good kicking, and possibly a
bullet in the head - or to escape that, go out and get yourself a fucking girlfriend.
Slashdot Mirror
"Top Gear" in the UK does not HAVE commercial breaks! It's made by and shown on, the BBC, whose main TV stations have no adverts at all (except for their own forthcoming shows).
When "Top Gear" is repeated on other, commercial channels, then yes, there are advert breaks.
Conventional wisdom was that the lunar distance ranging, using the lunar retroreflector arrays, averaged 1 photon or less returned to the Earth detector, per outbound laser pulse.
Now presumably, this 622 Mbit/sec was outbound only (Earth to Moon) and not a return trip. So that will help quite a lot.
But to get these remarkable bandwidths, the Earth-based laser and beam expander/collimator must be pretty special.
Does anyone know the juicy figures like: Laser wavelength, energy per pulse, pulse rep rate, and so on? Oh, and the strength of the signal received at the moon, in (I dunno) photons-per-bit or something?
By coincidence, I happened to notice this on their UK site, yesterday evening:
"Claim period
2 years (minimum) from date of delivery, 5 years in Scotland and 6 years in the rest of the UK"
http://www.apple.com/uk/legal/statutory-warranty/
For goodness sake, I wish whoever wrote that would learn written English. Also, it's "videos", "photos", and so on.
Re: Location: Wrong. The entire UK grid is "locked together" and it all runs at the same frequency. Necessarily. Also: Recorder doesn't need to be plugged into the mains. 50Hz hum permeates the space around us. Try grabbing hold of an oscilloscope lead and look at how much 50Hz hum you are "carrying". Unless you're a long way from mains outlets, it's a lot.
There is this global media obsession with referring to Mars as "The Red Planet". It is really irritating.
Mars has a name, just like all the other planets in our solar system: Its name is "Mars". So use it, and respect the planet and its name.
It's so irritating and "media lovvie". Also, the planet it not really "red" at all. It's brown. It belongs in exactly the same category as media types referring to scientists as "boffins". It's RUDE and DISRESPECTFUL.
I wish the media would shed this ridiculous obsession with ignoring the name of the planet MARS.
For exactly the same reason that you can't fit an infinite number of AM radio stations into a finite width of radio spectrum. The act of AM-ing a single frequency carrier f_c at data rate / frequency f generates sidebands each side of the carrier, so that the signal now spreads over (f_c - f) to (f_c + f), i.e. the bandwidth becomes (IIRC) 2f. Fleetie
No, you cannot "get something brighter".
The concentrated spot of light cannot even be quite 1 x the brightness of the sun. Never mind ">5000 times brighter". The laws of thermodynamics say so. You cannot focus an image of a light source so as to make the intensity at that focus more intense than the light source itself. Kudos for good execution of his idea, but that ">5000 times brighter" claim is just plain wrong.
10mA per hour, huh?!
That's what this seems to rely on: The conversion of methane (CH4) to CO2 by combustion. Is CH4 a more powerful greenhouse gas than CO2? I seem to remember it is, but I'm not sure.
Why are LLR returns always exactly 1 photon per shot? I see no reason why that should be true. Also, I read that the American ones used to return 1 photon back per shot sometimes?
A grain of sand weighing 1 gram? You're an idiot.
No doubt we'll find out on uk.misc later.
"The Apollo's Guidance Computer was a snail-like 1.024 MHz in comparison, and it's external signaling was half that -- actually measured in Hz (1/1000th of 1 MHz, much as 1 MHz is 1/1000 of 1 GHz)." FAIL!
What about black holes NOT from the centre of galaxies? Fairly normal large (massive) stars end up as black holes too, so I'd expect a lot of black holes in this galaxy anyway, even if it hadn't interacted with any other galaxies.
"... the dark side of the Moon"?
Got Brain Damage, have we?! I see the pigs are on the wing again!
I mean sure, there is always a DSOTM, but the pesky thing is always moving!
BTW, who reckons that Waters' recent errant flying pig was a deliberate stunt; a reprise of the simimar incident in London in 1976 (IIRC); and NOT an accident?
2005.
See Wikipedia "Hydrogen Sulfide".
Yawn. Haven't you got trees to hug?
Anyway I'm typing this on a 21" Iiyama trinitron monitor at 1920*1200 resolution, and very nice it is too.
I also have a 10-year-old Sony trinitron TV at home. It's needed repair once, but the original tube is still fine.
It's going to be a while (I hope) before I need to buy an LCD monitor or an LCD/plasma TV. That suits me fine.
Who modded that "Funny"? It was an asinine comment indicative of a fool.
Isn't there a way to set up Slashdot so that I can not have to see any comments labelled "Funny"? Because they're about as funny as a kick in the teeth, and serve only to mark out the less-educated "members" (and I do mean "members"). Pearls before grunting swine - really. Mod me down as much as you like; it's true. Grunting, baaa-ing, bleating ignoramuses who can only react to interesting stories by posting silly quips. It's like fucking Pink Floyd "Animals" in here. Baaaaaa!
Admins: Please do consider implementing a killfile system based on how articles are labelled. I'm absolutely sure many of the less-stupid readers would very much appreciate not having to sift through the 90% of comments that are posted by the ill-educated unwashed and labelled by their peers "Funny".
Wouldn't it be ironic if some of those cretins labelled this comment "Funny"?!
>The inverse square law only applies to an isotropic source - a light that's being emitted in every >direction (like a candle). This is why lasers stay bright at a distance. Utter, utter nonsense. Lasers in the far field follow inverse square too. This applies when they shine lasers at the retroreflectro array on the Moon. The beam diverges at (say) 1mR, so at 1km, the beam might be (say) 1m^2 in "area". The intensity there will be 1Wm^-2 if the laser is a 1W laser. At 2km, the beam will be twice as wide, so the area projected onto a screen at 2km will be 4m^2, so the intensity will be (1/4) Wm^-2. WELCOME TO THE INVERSE SQUARE LAW. Who on EARTH modded this guy up to +4, Insightful?! Oh, wait, this is SlashDork. Parent : PLEASE go to alt.lasers and educate yourself.
Back in 1982 or 1983, when I had a Dragon 32, which output its video and audio via a UHF modulator to a TV, I noticed that various on-screen black-and-white (especially) patterns would cause buzz to come through on the TV audio channel (through which the Dragon's deliberate sound output also appeared). Some reader of a Dragon-oriented magazine also noticed this, and submitted a program to draw such patterns to the screen as to cause a "tune" to be heard via the mechanism of this "buzzing" interference between video content and what came out of the TV speaker. It sounded shit. But it kinda "worked".
I'm speechless!
Fuck me; isn't there any way to filter out ALL comments modded "Funny"? Because they aren't "funny"; they're asinine, and indicative of people who DON'T understand the present subject, and can only grunt like pigs. This is interesting; so STOP with the "funny" comments already. Fuck, and I thought this was a forum for people with some intelligence and knowledge. I thought I was going somewhere interesting, and I wandered into a pig farm, and now I'm stinking and covered in shit and have gruntinnitus. Free clue: If you're intending to post something with the hope that it be modded "funny", then STOP NOW, because you're a sad 'tard that needs at least a damn good kicking, and possibly a bullet in the head - or to escape that, go out and get yourself a fucking girlfriend.