@@heavyhoved Humans are not part of quantum theory, therefore measurement is not part of quantum field theory either. The only part that exists is waves.
I love how the minute details are introduced so subtly! For instance, the different 'glowing idea lights' on each person were according to their time! Loved it! :)
Yeah well, I know I am late to the party...but wow! Having the entire history explained to me in a 6 minute window rather than over the period of four grades--was really helpful and I loved it.
This was a very well told story. I knew (approximately) all of its parts but it's the first time I see someone put all of them together like It's Okay To Be Smart did here. It definitively add something to my comprehension of what light is.
+Christoffer Vincent Thon Dang. To all Danes, please accept my apologies for that error. Copenhagen is one of my favorite cities ever. Danish people are wonderful. I owe you all one.
hes one of d best....though i learnt dis already in my high school... i realized many things and even understood connection between many chapters and people!!
out of the all your videos this one is my favourite the language used & the way it was presented is easily understandable a big thumbs up for you my dear bro
Where did you get the year 1918 from, regarding Max Planck's and Einstein's discoveries? Planck initially (in 1900) considered quantization to be only a mathemathical trick (i.e. did not speculate too much on the physical significance) to solve the problem of blackbody radiation, and Einstein wrote the paper on the photoelectric effect in 1905. Might be nitpicking, but I'm still curious.
Just to point out something about Max Planck, he actually presented his idea about quanta of light in 1900 but he did get the Nobel prize in 1918. I'm sure that's what you meant by "1928" on the timescale but still wanted to clarify that ! Great episode btw
You guys should do more videos on how did we figure out on other inventions and their history(TIMELINE). Great video, hope to see more similar videos. Vaccines Periodic table Aeroplane Radio X ray Steam engine Car Refrigerator Electricity Television Antibiotics Ship Rocket Compass Agriculture Mathematics Computers Telecommunications Etc etc.
the color of an object is the color than it cant absorb right so it reflects it. So the question is what makes an object not to reflect specific color, what makes it say to reflect red and not yellow.
Nice video. Correction for the photoelectric effect: the reason why it could only be explained by light being a particle and not a wave is because when we use too low frequencies the photoelectric effect does not occur at all. If it didn't have anything to do with light being a particle, we would expect electrons to build up energy and get kicked out anyway. Or maybe increasing intensity of the low frequency light would do the trick, but it's not what we observe, therefore, particles.
Since a commentator pointed out; "Funny how there is always a medieval Muslim guy in the histories of science.", I would like to add something the layman like myself, who might not have had the time or interest in reading up on what and why this is, and why it hasn't happened since. Have a read about the The Muʿtazila and the Ash'ari. To most the difference between the two might not seem obvious, but leaving all other key differences aside, and keeping in mind that all these important "scientists" belonged to the Muʿtazila creed, I'll leave you with this quote from wikipedia; "The school (Ash'ari) arose mainly as a response to the Mu'tazila school of thought and some of their beliefs, although both schools advocated the use of Rationalism in Religion and held the same opinion on the Athari School, some Muslims thought that Mu'tazilizm gave rise to strange and against previously-held opinions. For example, the Mu'tazila believed the Quran to be created, whereas Ash'arites believe that it is uncreated.". I suggest if you want more then a buzzword level of understanding, you read up on these two schools, because they lie down the foundation behind the Islamic worlds inherit and continued regressive attitude towards... Well everything in the modern world. Read about Turkey's history, as well as the late stages of the Ottoman Empire, and Mustafa Atatürk. Specifically note, that further from Turkey's origin you get, the worse the attitude towards Atatürk has become, to the point where large portions of Turks today, believe him to a Jewish infiltrator, who tried to usurp righteous Islamic rule. Build on that the fact that the muslims that immigrated to Europe between 20 and 40 years ago, did so to escape Islamic oppression, and that today their grandkids are fighting to plunge Europe into theocratic rule, and you're probably beginning to see the picture. Islam is a toxic, dangerous ideologue, which has festered and eventually dominated where ever it has been tolerated. Whenever any flicker of progress away from theocracy and religious oppression has been made in the Islamic world, it has always devolved back into barbarism, and the reason is Islam itself. Please note that I say Islam. Muslims are not inherently bad, they just happen to shelter and help spread very toxic ideas, to the detriment of themselves, their children and the societies they live in.
I Have a question and a nice topic for a video. The earth rotates anticlockwise, the moon rotates anticlockwise, the moon revolves around the earth anticlockwise, the earth revolves around the sun anticlockwise, Sun moves around the Galaxy anticlockwise, all the planets and stars rotate and revolve anticlockwise (except 2), hurricane tornados and cyclones rotates anticlockwise (Northern Hemisphere), basically everything rotates anticlockwise. Then why in the name of science do clocks rotates clockwise?
Even though the Earth rotates counter-clockwise, the sun actually moves in the Earth's frame of reference (as if the universe is geocentric) clockwise (from the East to the South to the West). In fact, the clockhands of sundials were shadows which travelled along with the sun, in the same direction what we call "clockwise".
The direction of the sun is clockwise in the northern hemisphere. Which is where the first civilisations arose. If they'd been south of the equator, clocks would probably run counter clockwise.
Can you please do a video on the science of popcorn? Honestly, it's really unclear how little bits of dried corn manage to pop and be fluffy when they're heated up...
Newton was right: The frequency range of the visible light cover exactly one octave. The frequency of blue light is exactly two times higher than the frequency of red light. You can divide this frequency range into 8 colors to make a nice symmetrical color wheel. We could divide the color range by 12 and use the same equation as for an electronic keyboard piano : multiply the frequency by 2^(1/12) to compute the frequency of the next color. Two raised to the exponent value of the fraction one divided by twelve means that after we apply the multiplication by this same constant twelve times, the final result is exactly double. It is a linear multiplicative scale. The division of colors into 3 primary (red, green, blue) and 3 secondary colors (yellow, cyan, magenta) form a color wheel. Mixing a pair of primary color give the secondary color presented on the wheel. If the color mix is from pigment, paint, etc, the result is always darker. When mixing the same pair using light emiting elements, the result is brighter. The same color wheel would work as we if we would divide the color range by 12 to follow the modern musical scale. Any mix of two of 12 twelve color would generate the color pointed by the antipodes of the median line,
I prefer Lucretius’ explanation of light in De Rerum Natura, where he says that all objects give off shells of their image (simulacra) which our eyes can detect. He was an early atomist and assumed that light was just composed of really tiny atoms, so we can’t feel it but our eyes can see it. Interestingly, he said that the sun sends out tiny atoms which move really fast through space to bring us light.
After watching 30 or so episodes of this channel in 4 days, I've started wandering - am I that into science or just into the guy who's hosting the show :?
realy well done! loved the animations very well moderated, spoken in a exciting way (and not overblown) can't wait for #2 BTW. what about merch or winning stuff while living outside of the US ? (Europe)
Color does depend upon perception, it is NOT an intrinsic property of light; frequency is an intrinsic property of light, but the frequency is only a color after being perceived and interpreted.
Einstein did not use the theory of Plank to sugest the idea of quantized photons. He used principles of thermodynamics and analogies with the behavior of a gas of particles. You can see this on the article he published.
my question about light is, when you're in a room and your turn off the light, where does it go? I know light bounces around and whatnot. as well as (apparently) everything absorbs some amount of light. so, due to lights speed, does it actually continue to bounce around, but it's so fast it appears to disappear instantaneously?
This is such a useful and interesting video, I regret seeing the inappropriate image of a woman in the alchemy symbolism drawing you show. I would appreciate you editing that out so I can share this with people I love. May God bless you and yours.
Great video, but Einstein's proposed the idea that light energy is quantized, not Plank. All what Plank's theory needed was, the energy emitted by an atom in the form of light has to be quantized. And his proposal was that the working of atoms should ensure that. What Einstein argued (and used to explain photoelectric effect) that light in general carries energy in quantized packets.
Greeks just used the "rays from the eyes" model as a way to calculate visibility, perspective etc. It's a simpler way, in fact, even if it isn't the way it works.
ØØØØØØØØØØØPS!
I accidentally called Ole Rømer Dutch. He is Danish. Very sorry for the error!
It's Okay To Be Smart damnit I thought we finally achieved something in Holland...
ah, well, we still invented the microscope, thats something
iPhil dutch > danish is the difference
+iPhil Careful there!
Im dutch, but i dont mind the mistake. Danish people are awesome!
+Seameus True.....
This week's video is a little light history lesson. Hope it brightens your day!
It's Okay To Be Smart that pun. 😂
sir can the next video be on physics
It's Okay To Be Smart HAHAHAHAHHAHAHAHAHAHAZHZHZHAHZHAH
Because of light, I will have 20/20 vision in three years.
DO WHAT WOULD HAPPEN IF THE ASTROID BELT CRASHED AND BECAME A PLANET
EDIT: PLEASE
Science: "Is it a particle or a wave?"
Quantum Theory: "Yes."
My girlfriend should be named Quantum Theory.
😂
Junaid . Is it because she exists to you but to no one else?
And according to Quantum Field Theory, waves, UNTIL one measures the field, THEN you see a particle.
@@heavyhoved Humans are not part of quantum theory, therefore measurement is not part of quantum field theory either. The only part that exists is waves.
one could say this episode was
...
LIT
It's OK to be Bright (bright is synonymous to smart)
Paulus Kivelä Please stop.
It's so bad it's good
*baa dum tss*
OHHH MY GOSH UR AMAZING
I love how the minute details are introduced so subtly! For instance, the different 'glowing idea lights' on each person were according to their time! Loved it! :)
"Our eyes shot out light."
And then the Sun sets.....
@Andrew Friend What if sun is like a magnifier to enhance your vision? People see some stuff in the dark but not as much.
Sun : The eye is a deady lazer!
Teacher caught me watching this at school, he was like "NICE!"
They should show this instead of those boring videos that no one actually watches.
@@stralax57 ikr
Lol
Noice
@@stralax57 most of those boring videos are too boring to teach me anything
i am walking on a flat Earth shining light out of my eyeballs.
The flat Earth society is located all around the globe.
Both comments are gold.
Spairus
you scared me i thought i commented that and was the most confused in my life for like 1 picosecond
lol there's also another top comment with our profile pic
Yea... NO
Can we get an "I did a science" shirt?
I thought there already was one
there is
I think you have to do a science first.
@@lessonslearned6760 understandable
@@lessonslearned6760 the ‘science of retail purchases’.
it's absolutely incredible.. we wouldn't have any of our technology today without these discoveries with light..

This video was very enLIGHTening!
I'm sorry
No you’re not
You should be.
You should "see" yourself out!
I don't feel enlightened, I think you're stupid.
I was always inquisitive about what was light and what developments actually led to the electromagnetic spectrum.Thank you so much.This was wonderful.
Thanks for the great video. I love how the 'idea' light bulb over each scientist's head is a light-source that was used at the time.
"Is light a wave or a particle?"
Yes.
both
@@gauravproton1956 r/woooooosh
I've been a subscriber for a while, and I think this is one of most well-presented videos you have done to date.
Good timing! I'm doing exactly this in my physics classes at college
so next u gonna tell us how this led to quantum theory? and the history of it
Daggeress yeeeeeeeesssss
Yeah well, I know I am late to the party...but wow! Having the entire history explained to me in a 6 minute window rather than over the period of four grades--was really helpful and I loved it.
4:55 I think Max Planck had an idea that light travels in quanta at least 15 years earlier than 1918.
I really like the frames/clip starting at 5:11 because I feel it helps to visualize particle-wave duality.
This was a very well told story. I knew (approximately) all of its parts but it's the first time I see someone put all of them together like It's Okay To Be Smart did here. It definitively add something to my comprehension of what light is.
Really awesome production quality. I would love more videos just like this one.
Thank you! We always try to make every video better, hope we can keep moving the bar up
7 minutes video by "It's Okay To be Smart = 7 years of education in my country.
I love this channel.
Your profile picture is deeply disturbing.
Yeah, I know. They took my that one after my surgery. But I look much better now
5:24 Next level satisfying
Your session answers Tons of Questions.......Thanks
It's a common mistake among non-europeans but Ole Rømer was Danish not Dutch. As a Dane I feel compelled to point that out.
+Christoffer Vincent Thon Dang. To all Danes, please accept my apologies for that error. Copenhagen is one of my favorite cities ever. Danish people are wonderful. I owe you all one.
NP
+
"Common mistake" is a bit of a stretch. I've never heard of him.
Im neither Danish nor Dutch, but I still feel you owe me one.
Misa: i would never dream living a world without light
L: yes that would be dark XD
shut up fcking weeb
well thats toxic
Just reading that, i can see that scene playing out. Awesome show.
@@tazztazztazz0855 bruh, you have a profile pic of Futaba (an anime character) smh
TRULY AWESOME EPISODE. kudos to the animation department too!!!
hes one of d best....though i learnt dis already in my high school... i realized many things and even understood connection between many chapters and people!!
YOU ARE THE BEST SCIENCE COMMUNICATOR EVER !! There should be an award that you would win ... Thanks for making these videos !!!
5:27 best part of the video...
I absolutely loved it. I love how how anchor it very much. Love the videos.
We discovered it because some dude was board and said "Let there be light!"
Random Stuff Genius
An atheist gonna be angry
@@n_d_cisive I think he's making fun of creationists
Bored*
out of the all your videos this one is my favourite the language used & the way it was presented is easily understandable a big thumbs up for you my dear bro
Where did you get the year 1918 from, regarding Max Planck's and Einstein's discoveries? Planck initially (in 1900) considered quantization to be only a mathemathical trick (i.e. did not speculate too much on the physical significance) to solve the problem of blackbody radiation, and Einstein wrote the paper on the photoelectric effect in 1905. Might be nitpicking, but I'm still curious.
I was gonna make the same remark when I noticed yours.
Just to point out something about Max Planck, he actually presented his idea about quanta of light in 1900 but he did get the Nobel prize in 1918. I'm sure that's what you meant by "1928" on the timescale but still wanted to clarify that ! Great episode btw
THIS VIDEO HAS BEEN THE MOST INTENCE VID SO FAR! I had to rewind it x3 TIMES!!!!! And I love this science stuff!!!!!
0:18 Greeks figured out ray tracing 3000 years early
You guys should do more videos on how did we figure out on other inventions and their history(TIMELINE). Great video, hope to see more similar videos.
Vaccines
Periodic table
Aeroplane
Radio
X ray
Steam engine
Car
Refrigerator
Electricity
Television
Antibiotics
Ship
Rocket
Compass
Agriculture
Mathematics
Computers
Telecommunications
Etc etc.
First Unbox Therapy then Matthew Santoro then Discovery then you in just 10mins WOW!!!!!!
I wish theses videos would be use in classrooms... so much info in little time! Love it!
WOW I "ACCIDENTALLY" FOUND THIS.....I LOVE LOVE THIS. THIS IS FANTASTIC!!
this is my favorite video in this channel so far!! absolutely amazing
Haaa ! This is so amazing ! I love to hear about all this scientific breakthroughs, achieved in ways I hadn't thought about :'D
Great video mate, gonna use this in my physics lesson today :)
wow the best explanation of the electromagnetic spectrum.
Particle duality- light is particle and wave
best video i saw till now about the topic thanks for making it so succinctly!
Outstanding video and superbly well narrated.
This video gave me goosebumps
You almost made the quantum chemistry I learned actually interesting.
Nice graphics btw.
I must say, This video was pretty illuminating!
Well joe, youre a _bright_ man
Imma see myself out
Light and sound waves are one of my favorite things to learn about.
5:20 you've gotta love the animations on this channel.
And the stupid jokes too :D
the color of an object is the color than it cant absorb right so it reflects it. So the question is what makes an object not to reflect specific color, what makes it say to reflect red and not yellow.
Nice video. Correction for the photoelectric effect: the reason why it could only be explained by light being a particle and not a wave is because when we use too low frequencies the photoelectric effect does not occur at all. If it didn't have anything to do with light being a particle, we would expect electrons to build up energy and get kicked out anyway. Or maybe increasing intensity of the low frequency light would do the trick, but it's not what we observe, therefore, particles.
If there's another Cosmos series in 30 years or so, Joe should be the one to narrate it!
Nah we need a half-cripple 100+ year-old Morgan Freeman to do it 😂
Since a commentator pointed out; "Funny how there is always a medieval Muslim guy in the histories of science.", I would like to add something the layman like myself, who might not have had the time or interest in reading up on what and why this is, and why it hasn't happened since.
Have a read about the The Muʿtazila and the Ash'ari. To most the difference between the two might not seem obvious, but leaving all other key differences aside, and keeping in mind that all these important "scientists" belonged to the Muʿtazila creed, I'll leave you with this quote from wikipedia; "The school (Ash'ari) arose mainly as a response to the Mu'tazila school of thought and some of their beliefs, although both schools advocated the use of Rationalism in Religion and held the same opinion on the Athari School, some Muslims thought that Mu'tazilizm gave rise to strange and against previously-held opinions. For example, the Mu'tazila believed the Quran to be created, whereas Ash'arites believe that it is uncreated.". I suggest if you want more then a buzzword level of understanding, you read up on these two schools, because they lie down the foundation behind the Islamic worlds inherit and continued regressive attitude towards... Well everything in the modern world.
Read about Turkey's history, as well as the late stages of the Ottoman Empire, and Mustafa Atatürk. Specifically note, that further from Turkey's origin you get, the worse the attitude towards Atatürk has become, to the point where large portions of Turks today, believe him to a Jewish infiltrator, who tried to usurp righteous Islamic rule. Build on that the fact that the muslims that immigrated to Europe between 20 and 40 years ago, did so to escape Islamic oppression, and that today their grandkids are fighting to plunge Europe into theocratic rule, and you're probably beginning to see the picture.
Islam is a toxic, dangerous ideologue, which has festered and eventually dominated where ever it has been tolerated. Whenever any flicker of progress away from theocracy and religious oppression has been made in the Islamic world, it has always devolved back into barbarism, and the reason is Islam itself. Please note that I say Islam. Muslims are not inherently bad, they just happen to shelter and help spread very toxic ideas, to the detriment of themselves, their children and the societies they live in.
I Have a question and a nice topic for a video. The earth rotates anticlockwise, the moon rotates anticlockwise, the moon revolves around the earth anticlockwise, the earth revolves around the sun anticlockwise, Sun moves around the Galaxy anticlockwise, all the planets and stars rotate and revolve anticlockwise (except 2), hurricane tornados and cyclones rotates anticlockwise (Northern Hemisphere), basically everything rotates anticlockwise. Then why in the name of science do clocks rotates clockwise?
Even though the Earth rotates counter-clockwise, the sun actually moves in the Earth's frame of reference (as if the universe is geocentric) clockwise (from the East to the South to the West). In fact, the clockhands of sundials were shadows which travelled along with the sun, in the same direction what we call "clockwise".
The direction of shadows on sundials is clockwise.
Abrar Fahyaz that's like saying why is north north and south south. It all depends on your perspective. Good grief!
The direction of the sun is clockwise in the northern hemisphere. Which is where the first civilisations arose. If they'd been south of the equator, clocks would probably run counter clockwise.
You’re the best. Very good video, intelligent, entertaining, interesting and great delivery.
Can you please do a video on the science of popcorn? Honestly, it's really unclear how little bits of dried corn manage to pop and be fluffy when they're heated up...
Newton was right: The frequency range of the visible light cover exactly one octave. The frequency of blue light is exactly two times higher than the frequency of red light.
You can divide this frequency range into 8 colors to make a nice symmetrical color wheel. We could divide the color range by 12 and use the same equation as for an electronic keyboard piano : multiply the frequency by 2^(1/12) to compute the frequency of the next color. Two raised to the exponent value of the fraction one divided by twelve means that after we apply the multiplication by this same constant twelve times, the final result is exactly double. It is a linear multiplicative scale.
The division of colors into 3 primary (red, green, blue) and 3 secondary colors (yellow, cyan, magenta) form a color wheel. Mixing a pair of primary color give the secondary color presented on the wheel. If the color mix is from pigment, paint, etc, the result is always darker. When mixing the same pair using light emiting elements, the result is brighter.
The same color wheel would work as we if we would divide the color range by 12 to follow the modern musical scale. Any mix of two of 12 twelve color would generate the color pointed by the antipodes of the median line,
I prefer Lucretius’ explanation of light in De Rerum Natura, where he says that all objects give off shells of their image (simulacra) which our eyes can detect. He was an early atomist and assumed that light was just composed of really tiny atoms, so we can’t feel it but our eyes can see it. Interestingly, he said that the sun sends out tiny atoms which move really fast through space to bring us light.
Wooow...thank you for explaining it the best possible way👍👍
I can not comment every video,but every episode is amazing...Thank you. From junior scientist
One of the best episodes. Thank you.
Today I Learned something new! :D
I didn't know that the ancient Greks thought we had flashlights inside our eyes. ;)
After watching 30 or so episodes of this channel in 4 days, I've started wandering - am I that into science or just into the guy who's hosting the show :?
This was most illuminating!
realy well done!
loved the animations
very well moderated, spoken in a exciting way (and not overblown)
can't wait for #2
BTW. what about merch or winning stuff while living outside of the US ? (Europe)
super job this vedio actually helped me a lot in understanding
my post graduation lesson
thank you Mr. Jo 4 this vedio
Color does depend upon perception, it is NOT an intrinsic property of light; frequency is an intrinsic property of light, but the frequency is only a color after being perceived and interpreted.
wow I have a science exam and I have a lesson on light reflection and refraction
4:36 The basis of why anyone who tries to say "cell phones are unsafe cause of radiation" should immediately be stopped taken seriously.
This got me so excited for some reason.
at least ancient Greece had X Men.........
This has been the most epic video so far!
Einstein did not use the theory of Plank to sugest the idea of quantized photons. He used principles of thermodynamics and analogies with the behavior of a gas of particles. You can see this on the article he published.
Thank you for educating me
dude! I love your videos! thanks for doing them!
These are incredibly well done videos...
loved your animation
Awesome video! Loved the animations and little details.
I love its animation as well as its concept. Keep it up bro.
Great episode. Well researched.
my question about light is, when you're in a room and your turn off the light, where does it go?
I know light bounces around and whatnot. as well as (apparently) everything absorbs some amount of light.
so, due to lights speed, does it actually continue to bounce around, but it's so fast it appears to disappear instantaneously?
Great video! So much information in such a short period of time and yet so clear! Thanks!
for such amazing videos.. iam definetely ready look forward on
You forgot to mention ether! That's a very interesting part of the history of light
This is such a useful and interesting video, I regret seeing the inappropriate image of a woman in the alchemy symbolism drawing you show.
I would appreciate you editing that out so I can share this with people I love.
May God bless you and yours.
Great video, but Einstein's proposed the idea that light energy is quantized, not Plank. All what Plank's theory needed was, the energy emitted by an atom in the form of light has to be quantized. And his proposal was that the working of atoms should ensure that. What Einstein argued (and used to explain photoelectric effect) that light in general carries energy in quantized packets.
Beautiful
more like this please!
Greeks just used the "rays from the eyes" model as a way to calculate visibility, perspective etc. It's a simpler way, in fact, even if it isn't the way it works.
Amazing video and visuals!
hey Joe. really good content in this one. congrats. wish you all the best.
Just taking out the time to appreciate the amazing animation 😍
Why is infrared hotter than visible light? It has a longer wavelength so shouldn’t it have less energy and thus, be less hot?
Is it possible to predict whether a photon will undergo reflection or refraction before it strikes a smooth glass surface ??
best video ever! cool animation, nice voice 😘, and an interesting topic. keep working this hard