Physics (Dr.Michio kaku) - How light travels through glass ?!?!?

[alexasmithy]

i enjoyed this vid

[thejameskan]

i enjoyed this vid

[imnumber0ne01]

Lol the first woman is an idiot, colloids allow us to see light in water

[raydredX]

@imnumber0ne01 How does that change anything? And to see the light in the water I just need to dive in, why would I need colloids? Would you care to explain?

[imnumber0ne01]

@raydredX Colloids are fluids that have floating particles in them that allow us to see where the light is traveling through, such as when there is a break in the clouds. It isn't caused by a change in speed. Amirite?

[raydredX]

@imnumber0ne01 But we can see through any fluid colloid or not, even if they call it opaque light can still pass through. And we can see through breaks in the clouds because there isn't as much cloud density there. And we can see the rippling, bending and blah blah in the water because the velocity changes, because the change in the velocity is the reason that there is refraction or "bending".

I'm sorry if my answer sucks but I don't understand completely what you mean.

[imnumber0ne01]

@raydredX Just forget it lol

[raydredX]

@imnumber0ne01 Forgetting stuff is no fun...

[jimbones2045]

Michio knows what he's talking about here and everybody should trust his knowledge and judgement.

Now watch this: watch?v=35JWz2MzEC0

[TheDigitalStone]

Darn it, i absolutely love science. But Amy Mainzer makes my focus drop like a freestyle counterweight.

She is just too hot for science.

[admiralct]

I think it's Amy Mainzer that's making all these space rocks so dangerously hard and dense

[KidsSayNoobALot]

@zidane583 so how does a fish know how to breathe underwater?

[gunblade64]

Amy Mainzer = gorgeous AND smart = sexy as hell

My apologize people, but this is the first time i didn't see her on Discovery Channel, and could actually post a comment about her.

[VERGIS92]

@HereisNathaniel and just because someone excells as a university student, that doesn't make him a superstar, there's tones of UNSOLVED problems in physics, which are not solved by these graduates, now Michio is still a good physicist, he didn't care about just getting a job, he literally wanted to contribute a lot to physics. But there's many not so good graduates who have solved or invented ground breaking concepts.

[VERGIS92]

@HereisNathaniel YOU shut up you fucking idiot, we are talking about Phycisist to Physicist comparison here, you didn't even understand my comments. The world's most clever living Physicist is Edward Witten. As for 'critisizing', science is about argument, and being able to disagree, you have to question even einstein's work, and believe me physicists still, to this day , disagree on a range of topics. They disagree for example as to what E=mc2 really means, and do further research.

[junior1984able]

@VERGIS92 sounds fascinating!

[VanMedia]

amy is hot!

[Kurtlane]

What I don't get is why is glass transparent, but not iron? Why is diamond transparent? Or Zirconium? Or quartz? Or water, but not mercury?

[theep16]

@Kurtlane It's because in those solids where the light isn't allowed to pass through the photon is absorbed by the electrons and thus put into increased energy levels and therefore not allowed to pass through. So in the case of a diamond and glass, the difference in energy levels are so great that the visible light spectrum isn't enough to be absorbed so allowed to pass through.

[kokopelli314]

A very nice non-explaination

[YOYOBadmojoJOJO]

Bring out the belly dancing scientist chick :( i miss the fire dancer

[snyggmikael]

@NoGoodUserNamesSadly but you can considder the % of the populus that have a good standing grade in school, in what area. But then again, the competition make many fall!

[jacky817]

@scientificboysclub Glass is an insulator with should have an energy gap that is between 5-10eV. Whereas the photon energy of the 3 visible lights are around 2eV. So how is the photon absorbed in the first place?

[ssesf]

And I thought Science used the metric system.

Speed of light: 297,000 km/s

[mignik01]

amy is hot

[anthonycotillo]

i love how the japanese guy talks, he makes physics fun

[Nerdsown]

@anthonycotillo Michio Kaku is American.. just of Japanese decent..

[SatoshiBatista]

@Nerdsown yeah, asian looking and his name is Michio Kaku, how could i ever gotten that wrong..

[SHEEPSTER1000]

If light speed is the universe's speed limit so to speak, then how could the universe expand faster than light??? To further complicate matters, if you theoretically traveled at the speed of light, I think time would stop. If time stopped or was equal to zero, then you use the formula D=R x T, then wouldn't distance=0? If distance equals 0, then would that mean at light speed u can be at any point in the universe instantly b/c distance would not exist? Now I am completely confused!

[xferociousx]

@SHEEPSTER1000 *uneducated answer warning* In my mind I think you pretty much answered you own question. Try not to picture the expansion of the universe faster than the speed of light as the matter moving from point A to point B faster than light but rather I visualize it as point A itself instantly being at what would have been point B.

[azizeqab]

why does light decrease in speed when u subject an angular momentum.

[BrokenBassBin]

Does light really slow down? Or does it merely take longer to travel through denser regions because it is obstructed off atoms? I'm sure the speed of light never changes but only takes longer to travel certain distances due to matter obstructing it's path.

[vinylandtubes]

How does the glass atom know exactly which direction to re-radiate the light particle?

[scientificboysclub]

they are arranged in such a way ....

[Galactus1]

@scientificboysclub So neighbouring atoms influence the direction? I wonder how that works...

[belliveau5]

@scientificboysclub they are arrange that way because of magnetic and electrical field, if a photon or electron moves through a force field of some kind(electro/magnetic) these forces will have an effect on the particules depending on which angle the force field and the photons trajectory meet. It a vacuum, theoreticaly, there should be no such forces acting on the trajectory.

[theep16]

@scientificboysclub how can the atom absorb all the different energies of photons of visible light, isn't it true that for an atom to absorb a photon it must fit the energy gaps necessary for the electron to gain an energy level?

[boorens18]

@vinylandtubes conservation of momentum dictates that it not have a new angle of motion.

[Stormtjakka]

@vinylandtubes It's not the Glass atom which 'knows' which direction to send it.that's the light particle. The glass atoms are like the border police, they stop the light particle for a bit and when you're across the border you're allowed to continue. however the border police give you a little push as you go. That's the re-radiating.

[vinylandtubes]

@MrMarley217 My mistake, I was assuming some general knowledge on the part of the readers and that caused you some confusion. Could have been better expressed as "...atoms of the glass...".

[JayDee98765]

@vinylandtubes The same way, a car knows which way to bounce off another car in a car crash.

[richardhehd]

@vinylandtubes

I highly doubt an atom "knows" anything by the definition of knowledge..

[amiyaiitkgp]

@vinylandtubes Good question - they don't know which way to re radiate - they radiate in every possible direction. But the waves from each atom superimpose and some cancel out and some stay....What you observe is the light than stays. Infact you can solve these equations based on this and the results will be exactly that of reflection, refraction and diffusion :)

[amjan]

@vinylandtubes LOL, that's a silly question. Imagine I shoot you with a gun in the stomach. The bullet will slow down going through your body and get out of you going in the same direction as it entered you - through your back obviously. You don't have to "know" anything for it to happen.

[tohidefromourways]

@NoGoodUserNamesSadly knowing what I do about bio genetics and neuroscience I doubt it.

[tohidefromourways]

@NoGoodUserNamesSadly I'm not smoking anything. Thats what cause humans to be humans is our ability to not need long hair because we can create our own environments (homes, heating, etc.) and what caused our brains to grow larger other than our primate relatives was our jaws being weaker due to muscular dystrophy being pin pointed there causing our skull plates to distance and allowing our brains to grow. Also meditation does increase brain functionality and size.

[scientificboysclub]

they are scientists you should not mute.

[charlee567890]

dam light speed its 1860,000 miles per sec to the avrge jet like 100 miles per hour ? thats like times what !!!! 100>??? 500?

wow one hundred eighty six thousand miles per sec FK thats FAST MAN!!!!!!!!

[Beef225]

no shit noob

[charlee567890]

dude i love micho i use to watch nova becuse i loved the unknow about space about artifisal intelegents but nova didn't have that all the time then i tryed to find someone that can talk about that stuff and i found him MICHIo KAku !!!!!! !1 woot! love that guy ^____^

[NeoKailthas]

Damn nice qualty. Wanna know if michio is good or not ? Imagin YouTube without ppl like him

[scientificboysclub]

Michio is very good .

[dday6645]

massiveants,

That is a great question. I had never thought of that possibility. Great now I have something else to rack my mind with.

[massiveants]

if light can be slowed down, could it theoretically be paused?

[scientificboysclub]

Yes not theoretically but really they did it in lab !!

same question asked in Naked Scientist forum !!

[utubejeffo]

Michio Kaku shows up on Art Bell a lot. So does Bigfoot.

I like him, but i'm not sure he's a genius. "Pop Theorist" might come closer.

[StrongAgnostic1]

He built an atom smasher in his garage...in high school. People who've actually studied his work don't question his enormous intelligence.

[scientificboysclub]

Thanks for telling this fact !!

I didn't know this !

[sushanalone]

@scientificboysclub Search Michio Kaku: "Physics of the Impossible" Talk To Tara Interview" 2: 36. i am sure at that time it would be impossible to build one but the concept got him a Harvard scholarship. :) 

[tohidefromourways]

Perhaps Asians jaws are weakened over a time, causing the brain to be able to expand because of diets of mainly vegetables, thus not needing strong jaws to tear meat, some asian countries have people who hardly do eat meat, but then again so do some people, and perhaps it may affect our offspring. That or because meditation increases gray matter and brain functionality. Your guess is as good as mine.

[VERGIS92]

@StrongAgnostic1 He's well educated, but not enormously clever, he built the atom smasher out of existing plans he got from university library, there's no invention in that, just good copying and improvising work

[aesrp]

@VERGIS92 He fabricated a betatron in his garage....IN HIGH SCHOOL, yes he's a very very smart man, that's why he teaches at CUNY. That's why he's a doctor of science not to mention one of theoretical physics. And a leading researcher in string theory is a huge accomplishment too, he's pretty clever. And this was in, what, the 60's? like 20 years after it was invented at Berkely. What have you done at your age?

[VERGIS92]

@aesrp He has yet to win the Nobel prize, I sure admire him, but neither him nor Steven Hawkings come any close to Richard Feynamn, Bhor, or Oppenheimer, or Einstein. Unlike Michio Kaku, I had to work to pay for my university and housing fees, I finally gave up working as an engineer (because of the low pay, unemployemnt) and used my expertise in the financial markets, I had to do this to survive, but believe me nothing excites me more than physics, and I like Michio Kaku

[aesrp]

@VERGIS92 at the same time, oppenheimer and einstein got nobel prizes in similar subjects, which were huge during the mid 20th century. Feynman worked with opje also, there are a lot of people working on string theory but at the same time I don't think the type of pressure exists that was around when people were fighting for their freedom and their country by making the atom bomb. And science isn't as vast in terms of the unknown as it once was, I don't think it's as easy to get a nobel prize.

[VERGIS92]

@aesrp There's many thinsg to be achieved yet, like sustainable nuclear fussion, waste disposal, and in electromagnetics we still have huge problems, we can't transmit signals underwater (submarines and torpidos cannot have aircraft-like rf technology), and many other problems, any of these would be life changing. But apart from formal scientists, there are some clever inventors who use advanced theories, such as the guy who made that laser scanner probability calculalator

[VERGIS92]

@aesrp This device scanned the roulette wheel, calculated the outcome of the roulette with amazing accuracy, and it was legitimate! That guy, using physics, probability theory, and simple electronics managed to outsmart the casinos, and legally made millions. He also outsmarted the 'experts' that casinos hire and proved that you can still invent better things

[aesrp]

@VERGIS92 interesting! I'm a physics major right now. Hopefully when I get out of college, there will be some sort of research I can do. Think it's possible ? : ]

[VERGIS92]

@aesrp Of course, you should never listen to negative thinkers, personally I have always worried about RF technology and its problems, and everyday life problems. For example, don't you believe that more could have been done to extinguish wildfires? the techniques used today are of too poor efficiency, and what if there's a mechanism , chemical /molecular that could allow chocking a fire instantly... this is something I worry about but the politicians are not

[aesrp]

@VERGIS92 What does your college tuition have to do with any of this? He got a free ride because he did well and offered promise and a new perspective on this, I think it's noble that you payed for your own college and i'm sad to hear you gave up your dream to live in the real world, that's not an easy thing to do. Hopefully one day, you can return to the field.

[VERGIS92]

@aesrp Have you seen Richard Feynman or Gellman talking? 95% of physics professors feel uneducated and intimidated when they listened to these guys, but yes even Michio Kaku is capable of intimidating many university and highschool professors.

[StrongAgnostic1]

@VERGIS92

What verifiable accomplishments exist under your name that demonstrate your intellectual superiority over Dr. Kaku?

[VERGIS92]

@StrongAgnostic1 I didn't say me over him, I said Feynman , Dirac etc, and present day Ed Witten, Michio is a good communicator to people but not a supersmart physicist, I said so because someone said 'wow he built an atom smasher at his garage' sure he did, but he was just copying on designs he picked at the local university library, he didn't invent it. let's get our facts straight

[GunsNRosesbitches]

@VERGIS92 But he was the cofounder of superstring theory. That alone makes him one of the world's leading physicists, thus I would definitely say he is supersmart.

[VERGIS92]

@GunsNRosesbitches all the PhD holders contribute something to their science, and that's what makes science exciting, PhD is not just learning your subject very well, it's taking it one step further. Also every human has unique way of understanding things, take 10 physicits, they will look at the same problem in 10 different ways, each person's imagination is as unique as their fingerprints.

[GunsNRosesbitches]

@VERGIS92 But being the cofounder of superstring theory holds enormous weight

[gsf422]

ok, i was searching for a coheed song and and i saw that big eyed chick......dang

eh, shes looks really smart ...

[junkfood66]

Michio Kaku and Amy Mainzer in one clip, unbeatable :D

[Bhinder14]

Really? Is Michio Kaku a genius??? He's my favourite theoretical physicist, I'm not saying that because its a diss towards him. I'm wondering because I'm trying to figure out a geniuses mindset!

[scientificboysclub]

s.. he is ...

[scientificboysclub]

yes, he is ...well if u read his theories ..or his books .. u will feel he is GR8!!

[Leojx94]

Amy is very cute and can teach any guy anything! She is Brilliant!

Michio is the next Enstien! He explains things in a simple understanding way!

[scientificboysclub]

yeah lol

[Freshhhhh1982]

Raman spectrometry.

[CAPTSCRU33Y]

Michio is a genius.

I think he's what we would call a futurist.

[scientificboysclub]

Os.... He is awesome !! I love his explanation .... Ok I have question for u ?? ........ why we find sand in desert .. that too soft sand ??

[CAPTSCRU33Y]

That's part of erosion.

I'm not well educated in that field of earth science.

Do you know?

[scientificboysclub]

well I think !!?? ..... huh.. cos important reason is there is no rain fall in desert ...... or perhaps ...... when earth was forming and taking its shape after volcanic activity ......... only hot and extreme places on planet ...... might be having soft sand

[kehwa]

Sand is just a bunch of rocks that have eroded over time. It can be made up of many rocks, mostly quartz. It appears in the desert mostly because it travels through water as rocks, and gradually breaks down over time. Before it became a desert, the land might have been the mouth of a river emptying out into an ocean. Then precipitation fades severely and surrounding areas dry out.

[simplystimpy]

This is great, do you have the rest of the video? I want to see the part where they stopped a beam of light and the part about Mark Millis whos working on space travel? great episode, I just saw it again last night right before the one about alien faces.

[scientificboysclub]

Thanks for watching !! I can't upload whole thing cos .. copyright thing u tube rules I need to follow .. !! or else My account will be deleted .if i will upload it!!