It's a dupe: http://www.videosift.com/video/Make-burning-laser-pointer-from-flashlight-and-dvd-player

sheeeiiiit! haha. and I love that movie! .. brings back memories :}

but anyways, see you on the flip side -- or will i?!?!

to be continued...

In reply to this comment by laura:
for... Evvvv... Verrrrrr.... (w/ flashlight held up to my chin a'la 'Sandlot' treehouse scene) !!!!

In reply to this comment by EndAll:
this would be my first, if it were to happen! i joined right after the first one.

i'll cross my fingers anyhow

did they say how long it'd be down for?

In reply to this comment by laura:
it's 11:11...are you ready for the next Siftpocolypse? lol

for... Evvvv... Verrrrrr.... (w/ flashlight held up to my chin a'la 'Sandlot' treehouse scene) !!!!

In reply to this comment by EndAll:
this would be my first, if it were to happen! i joined right after the first one.

i'll cross my fingers anyhow

did they say how long it'd be down for?

In reply to this comment by laura:
it's 11:11...are you ready for the next Siftpocolypse? lol

"Destroyed"? Liddy laid bare the whole case. The dispute isn't about whether Fraudbama is an American citizen, it's about if he's a natural born American.

Show the "long form" birth certificate with all the other information that's in dispute: hospital, doctor, time of birth, etc. Fraudbama himself could release this document tomorrow, but he won't.

A barking idiot like Thrill-Leg Matthews proves exactly nothing; Liddy asks to see the real deal and Mathspews keeps going back to the same "Certification" that Fraudbama put out on the internet, with which you couldn't get a fking Blockbuster Video Membership card.

Anyone who calls Fraudbama "a great man" should switch on a flashlight and check for colon polyps while their head is up there.

Can't see with camera? Add a frakkin flashlight!

On my must have list after E3 are Crackdown 2, Alan Wake, Brutal Legend and Splinter Cell: Conviction.

Mass Effect 2 and Forza 3 also look pretty good but I'm not exited at all by Assassins Creed 2 and Modern Warfare 2, they look like they're just more of the same.



>> ^Fjnbk:
I'm most excited about God of War 3, if nothing else, because you can rip off the sun god's head and use it as a flashlight.

Don't you mean headlight?

I'm most excited about God of War 3, if nothing else, because you can rip off the sun god's head and use it as a flashlight.

Tags for this video have been changed from 'E3, Remeny, Dark, Flashlight, Monsters' to 'E3, Remedy, Dark, Flashlight, Monsters, Alan Wake, pc, x360' - edited by EDD

Comment hidden because you are ignoring dag. (show it anyway)

Wow, this is all so completely unexpected.

[pulls speech from tux]

Thanks KP and everyone for the lovely pictures. I haven’t actually worn a tux since my prom. It had a plum cumberbun and matched my girlfriend’s hand sewn dress. (Theme: Heaven. Theme song: Bryan Adams –Heaven)

That reminds me, A few weeks before the prom we went out and “parked” at Lion’s Park behind the loop road (you know the place) and cops came and shone flashlights on us until we dressed and drove away.

Anyway, where was I? Oh yes – the prom. We didn’t rent a limo, I drove my 1984 clapped out Ford Tempo. It was a pretty sweet ride – but looked out of place pulling up into the hotel where the dance was actually held. The valet kind of sneered at me as he took the keys. I don’t remember much about the rest of the night …

All those moments – not that they were great moments - are gone. But at least every single thing I’ve ever said on VideoSift is here forever. (you were wondering how I’d bring it around, right? Bam! Toastmasters, baby!) Outside of my fab family – videosift is my raison d'être, and I vow to you that it will never die. (unless we run out of money)

So thanks to everyone who continues to make this community flourish, grow and feed my enormous ego. Thanks also to my compatriot Lucky and my tolerant family.

All light is measured as traveling at the speed of light (300,000km/sec or 186,000miles/sec) by all observers. Even those traveling at or near c measure light to travel at c because their perception of time is altered by their velocity.

The misconception that if I'm traveling at .9c that if I shine a flashlight in front of me it will only appear to be traveling at .1c is because people forget to factor in how the passage of time (and space) changes for the observer at .9c. Remember, velocity is a measure of distance over time. Time passed for you is different from time passed for another observer at a different relative velocity. So the light particle travels 300,000km over one of your seconds while they measure it traveling 300,000km over one of their seconds. For each of you 1 second has passed and the 300,000km was traveled by the light particle leading to the same measurement for the speed of light by all observers.

>> ^Drax:
>> ^robdot:
if I where to shine a flash light in the direction I'm traveling then the light emitting from that flashlight should travel (relative to me) at the speed of light minus 500,000 mph. Otherwise the light would be traveling faster then the speed of light to someone not onboard the magical cosmic space
I think your wrong on this point, the speed of light is a constant. it will measure the same to all observers.

Then it -would- travel at speed of light minus the speed of the train to me, otherwise for someone "standing still" (whatever that is) the light would be traveling the speed of light plus the speed of the train.
I'm just gonna stop here before my HEAD ASPLODES.

This seems to be correct. Light travels at a constant speed through space. Unless your magic train is outside of space (and time) the light from your flashlight would travel at the speed of light, period. It is not affected by the speed of the emitter. The speed of light is a constant (yeah, refraction can make it SEEM like it changes, so can space expansion, but it's really a constant), and is not cumulative.
My question to math teachers was always..."If I'm going the speed of light in my chevy nova and I turn on my headlights, do they work?". Sadly, they never answered me, but the correct answer is "...kind of, define "work"." They would emit photons, but those photons would not go faster than the nova through space, and so they would not "light up" the space ahead of the car (as long as it traveled at the speed of light). My hypothesis is the photons would remain between the emitter and the reflector, and the "relative" speed of the car and light would be between 0 and twice the speed of light, but actual speed of each would remain the speed of light. There would not be a beam of light, but a point (or 2 points, one in front of or at the emitter, one in front of or at the reflector) where photons were traveling in the same direction, constantly gaining in "density".
A good question here might be, would there be a point where the photons reach a maximum "density" (where no more photons can occupy the same point in space time), and, if so, what happens when this point is reached?
Oh no! (head expands and pops!)

Let me put it this way. As I'm on the 500,000 MPH train, I ride through a star. At the same time I emerge from the star I turn the flashlight on. Is the light coming out of the flashlight moving forward at the same speed as the star's light outside? If so, then relative to me the light from the flashlight is moving at the speed of light minus 500,000 mph. The flashlight is traveling with me and emitting light as it does. If not, and the light is moving at the speed of light -from it's source-, then the light in the train is traveling 500,000 mph faster then the star's light outside.

Anyways, I've been directed to an interesting lecture on this, and apparently it's all more complicated then I could have hoped for. Yay.

I've been listening to Wolfson's lectures titled "Modern Physics for Non Scientists" and he explains this well. This is exactly what special relativity explains! I downloaded it from demonoid. I can send you an invite if you want.

It's also part of the failed Michelson-Morley experiment. They knew that light moved at a constant speed. They thought there was a fixed frame of reference that light moved through. They thought that light was a wave moving through the universal aether. They thought that by measuring the speed of light in different directions and at different times of the year, they'd see differences. It failed. They measured the same speed of light in all directions at all times of the year!
http://en.wikipedia.org/wiki/Michelson-Morley_experiment

Special relativity explained the failed experiment. Special relativity says that all physics are the same for bodies moving in uniform motion. As long as you're moving at a constant speed, you'll always measure light as the same speed! There is no fixed universal frame of reference. Nothing can be said to be at rest, or moving. You can only say something is moving "relative" to some other object. This leads to all sorts of weird things like time dilation and length contraction. Read up on it.

In reply to this comment by Drax:
When the Klingon Bird of Prey decloaked I was like, OMG!!!1!

But seriously, this does a great job at explaining the time / space relation. It still doesn't touch on one spot I've been trying to wrap my monkey brain around for some time.

Light travels at a set speed, nothing can travel faster then this speed. It's like a big universal speed limit. That should mean that if I'm traveling on a magical cosmic space train that's traveling in a straight line at.. lets say 500,000 mph, if I where to shine a flash light in the direction I'm traveling then the light emitting from that flashlight should travel (relative to me) at the speed of light minus 500,000 mph. Otherwise the light would be traveling faster then the speed of light to someone not onboard the magical cosmic space train.

This would also imply that there is a universal speed of 0. Which would mean we could measure our planet's speed through the universe to this speed of 0 by shining beams of light in various directions from our planet and measure how long each beam takes to reach certain distances (satellites positioned in front of each beam or something). After all our galaxy is moving through space, we're spinning in the arm of this galaxy, we're orbiting a sun.. all of these -should- factor in to how fast each of one is -actually- moving, right?

This big brainy friend of a friend told me once, no.. that's not how it works. And I suspect as much, unfortunately he wouldn't explain further. So I don't understand the workings of how there can be a set speed at which light travels and nothing can ever exceed this speed, when there's no specific speed of Zero to start accelerating from. Otherwise some things could very well be traveling faster then the speed of light relative to other things.

>> ^robdot:
if I where to shine a flash light in the direction I'm traveling then the light emitting from that flashlight should travel (relative to me) at the speed of light minus 500,000 mph. Otherwise the light would be traveling faster then the speed of light to someone not onboard the magical cosmic space

I think your wrong on this point, the speed of light is a constant. it will measure the same to all observers.


Then it -would- travel at speed of light minus the speed of the train to me, otherwise for someone "standing still" (whatever that is) the light would be traveling the speed of light plus the speed of the train.

I'm just gonna stop here before my HEAD ASPLODES.

if I where to shine a flash light in the direction I'm traveling then the light emitting from that flashlight should travel (relative to me) at the speed of light minus 500,000 mph. Otherwise the light would be traveling faster then the speed of light to someone not onboard the magical cosmic space


I think your wrong on this point, the speed of light is a constant. it will measure the same to all observers.