paime Posted March 23, 2012 Report Share Posted March 23, 2012 One for you scientists out there: Is it possible to trap light? I.e. if you put a candle in a box with reflective sides, will the candle's light remain in the box until it's let out? If not, why not? Quote Link to comment Share on other sites More sharing options...
Flights Posted March 23, 2012 Report Share Posted March 23, 2012 One for you scientists out there: Is it possible to trap light? I.e. if you put a candle in a box with reflective sides, will the candle's light remain in the box until it's let out? If not, why not? If you put a candle in a sealed box it will go out quite quickly 2 Quote Link to comment Share on other sites More sharing options...
ca_gere Posted March 23, 2012 Report Share Posted March 23, 2012 Aw man, that thread where everyone started asking hypothetical science questions for a bit was ace. Anyone remember what thread it was? Quote Link to comment Share on other sites More sharing options...
ca_gere Posted March 23, 2012 Report Share Posted March 23, 2012 I remember the phrase 'if the universe is donut shaped, technically you could fuck it in its hole' Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted March 23, 2012 Report Share Posted March 23, 2012 One for you scientists out there: Is it possible to trap light? I.e. if you put a candle in a box with reflective sides, will the candle's light remain in the box until it's let out? If not, why not?Were you thinking of getting someone to lift up a box that's been there for hours and instantly blinding them or something? Quote Link to comment Share on other sites More sharing options...
Guest Gladstone Posted March 23, 2012 Report Share Posted March 23, 2012 I suspect what he was getting at, though just guessing, was that light travels. So, if the light is inside the box, it can't travel beyond the confines of the box - i.e. "trapped"? I dinna ken the answer though. It's a long time since I did any sort of science at school... Quote Link to comment Share on other sites More sharing options...
Teabags Posted March 23, 2012 Report Share Posted March 23, 2012 One for you scientists out there: Is it possible to trap light? I.e. if you put a candle in a box with reflective sides, will the candle's light remain in the box until it's let out? If not, why not?Surely the uncertainty principle would come into this. Is there a camera fast enough to capture a finite amount of light escaping from a sealed box? If the light source was still emitting light, then you wouldn't know if the light when you opened the box was trapped light or from the source. I'm no scientist, I'm just being logical. Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted March 23, 2012 Report Share Posted March 23, 2012 I think he's wanting to store up some light for when the world ends and we're in darkness. Quote Link to comment Share on other sites More sharing options...
Guest Gladstone Posted March 23, 2012 Report Share Posted March 23, 2012 Or wants to hide in a darkened room from jakebassist posts, but still know he can have some light saved up in a box for when he gets scared. Quote Link to comment Share on other sites More sharing options...
ca_gere Posted March 23, 2012 Report Share Posted March 23, 2012 Another thing to tack onto that question would be mass. If photons have mass then technically the box could become 'full'. That doesn't answer the question but it's an interesting thought. Light penetrates everything though right? Even reflective surfaces. So I'm assuming you couldn't ever 'trap' light.**awaits correction from Flash. Quote Link to comment Share on other sites More sharing options...
Teabags Posted March 23, 2012 Report Share Posted March 23, 2012 Another thing to tack onto that question would be mass. If photons have mass then technically the box could become 'full'. That doesn't answer the question but it's an interesting thought. Light penetrates everything though right? Even reflective surfaces. So I'm assuming you couldn't ever 'trap' light.**awaits correction from Flash.Light has would have mass if it could be stopped dead but apparently that's impossible. So...fuck knows. I'm gonna stop pretending to be a smart arse. Quote Link to comment Share on other sites More sharing options...
Flights Posted March 23, 2012 Report Share Posted March 23, 2012 The more light is reflected the more it decays. In a box of mirrors it may look like the candle is reflecting lots and lots of light. However once the candle went out there would only be reflection for a very short period of time until the light decayed to a point where you could no longer able to see it. This reflection wouldn't even last a millisecond. It would look like when the candle went out the reflection dissappeared. Quote Link to comment Share on other sites More sharing options...
fatboy Posted March 23, 2012 Report Share Posted March 23, 2012 it would be warm Quote Link to comment Share on other sites More sharing options...
Guest Gladstone Posted March 23, 2012 Report Share Posted March 23, 2012 The more light is reflected the more it decays. In a box of mirrors it may look like the candle is reflecting lots and lots of light. However once the candle went out there would only be reflection for a very short period of time until the light decayed to a point where you could no longer able to see it. This reflection wouldn't even last a millisecond. It would look like when the candle went out the reflection dissappeared. Is that because some light gets through the reflective surface (like what ca_gere said)? Quote Link to comment Share on other sites More sharing options...
Flights Posted March 23, 2012 Report Share Posted March 23, 2012 To a certain degree. Even with high grade reflective materials which the light cannot get through the light reflections would soon decay.http://www.thenakedscientists.com/forum/index.php?topic=20431.0 Quote Link to comment Share on other sites More sharing options...
neepheid Posted March 23, 2012 Report Share Posted March 23, 2012 My new amp is being delivered by Yodel. Is that the one that a few folk had a rant about recently?I dunno, but I'll join in. What's this?It's the tweeter out of a 4x10 bass cab after it had been in Yodel's hands. They're on my shitlist, along with General George and Orange Broadband. The only good thing about the whole debacle is that the sender managed to extract compensation out of them. That took a couple of months to materialise though. Shower of useless bastards. Quote Link to comment Share on other sites More sharing options...
paime Posted March 23, 2012 Report Share Posted March 23, 2012 Surely the uncertainty principle would come into this. Is there a camera fast enough to capture a finite amount of light escaping from a sealed box? If the light source was still emitting light, then you wouldn't know if the light when you opened the box was trapped light or from the source. I'm no scientist, I'm just being logical.I guess it's kinda like 'if a tree falls in the jungle and there's no one there to hear it, does it make a sound?'. If light decays and energy can neither be created or destroyed then what does it get transferred in to in this case? Heat? I think I need some of Pierre's medicine from the End Prohibition thread to help me though this... Quote Link to comment Share on other sites More sharing options...
fatboy Posted March 24, 2012 Report Share Posted March 24, 2012 What kind of spider is this? Quote Link to comment Share on other sites More sharing options...
Jaaakkkeee Posted March 24, 2012 Report Share Posted March 24, 2012 Quote Link to comment Share on other sites More sharing options...
Guest Gladstone Posted March 26, 2012 Report Share Posted March 26, 2012 Anyone know anything about Windows Task Scheduler? When I got this laptop a couple of years ago, I thought I was going to use it to help run my life and starting saving tasks etc. so that reminders would pop up when I logged in. Well, there's one task that has never fucking gone away. It pops up within a few seconds of startup and if I click "ok" it normally pops up again a wee while later. I normally just minimise it and ignore it, but then there's a window that's open that I have no use for and it annoys me. I'd also like to just delete it forever because it shouldn't still be there. I can't find it to delete it in the Task Scheduler now, which is pretty annoying. The task shows up in the "status" section but not in the "active tasks" section. Any ideas?? Quote Link to comment Share on other sites More sharing options...
MattJimF Posted March 26, 2012 Report Share Posted March 26, 2012 I found this - http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/sag_tsconcepts03.mspx?mfr=true which may help you, but don't have a XP machine at home. Quote Link to comment Share on other sites More sharing options...
Flights Posted March 26, 2012 Report Share Posted March 26, 2012 Has anyone ever uploaded a song from garageband for iphone to youtube? if so how long does that usually take? Quote Link to comment Share on other sites More sharing options...
Skubbs Posted March 27, 2012 Report Share Posted March 27, 2012 Can anyone recommend any good websites for watching ice hockey matches, or any games coming up that a newbie should watch? I always enjoy it when I catch a game, so have no idea why I haven't been following it before now... Quote Link to comment Share on other sites More sharing options...
Teabags Posted March 27, 2012 Report Share Posted March 27, 2012 Can anyone recommend any good websites for watching ice hockey matches, or any games coming up that a newbie should watch? I always enjoy it when I catch a game, so have no idea why I haven't been following it before now...You get a few illegal streams here and there but I usually just search google on the day of the game I want to watch to find one. That is until next year. Hoping to get a new laptop that will stream decently to my TV which is when I'll invest in NHL Gamecentre Live. It'll cost about $120 but that means I can watch any game at any time on demand in HD quality, including the playoffs.Good games coming upBuffalo Sabres @ Washington Capitals tonight - Tied in points for the last playoff berth in the East, this means the winner could go on to get the final playoff spot as there are only 5 games left for both teams. Alex Ovechkin is hot right now but so are the entire Sabres team particularly the goalie Ryan Miller.Nashville Predators @ St Louis Blues tonight - St Louis have been on a surge since getting a new coach and are now top of the league. Nashville have a new guy back in the NHL from Russia and are looking to take 4th place in the West to get home ice advantage in the playoffs.Colorado Avalanche @ Vancouver Canucks Wednesday night - Colorado trying to battle back into playoff contention against 4 other teams with only one spot available while Vancouver hope to keep the top of the Northwest Division for one of the top 3 Western playoff berths.Watching live is a bitch though. EST games like BUF @ WSH start at midnight, PST games like COL @ VAN start at 3am.Also, I think they have a few games on in The Office on Sundays. Which games are shown is decided by the regulars, most of which play for the Aberdeen North Stars recreational team. Quote Link to comment Share on other sites More sharing options...
Skacel Posted March 27, 2012 Report Share Posted March 27, 2012 One for you scientists out there: Is it possible to trap light? I.e. if you put a candle in a box with reflective sides, will the candle's light remain in the box until it's let out? If not, why not?I would think a black hole would trap light, would it not? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.