How do Lasers Work?
ฝัง
- เผยแพร่เมื่อ 8 ก.ย. 2024
- Have you ever wondered how lasers work? Well, we did!
#inanutshell #kurzgesagt #kurzgesagt_inanutshell #youtubelearning #science #physics #lasers #howstuffworks #scienceshorts #lightsaber #sciencefacts #physicsquestions
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The Sith Bird we didn't know we needed
@@AlphaWolf7567 yes
i want a plushie of it asap
1000th like
I would buy it as a plushie
Duck Vader
"a solution in search of a problem" i LOVE that.
That's how most scientific discoveries start...
@parkerbond9400
They get an answer while searching for problems? Like what problems? Are they not searching for solutions in the first place?
@@thalmoragent9344 the joke is that a laser is an unnecessary problem we didn't need to invent, therefore it was like a solution to someone's search of a problem, i.e. someone's looking for a problem and they found one. At least that's what they thought until they found out that lasers are pretty useful.
@@realsugarphoenixthey're especially useful to mount on shark's heads
@@realsugarphoenix
That's not it, you described "a solution in *the* search *for* a problem", not "a solution in search *of* a problem". A solution in search of a problem is something that we know is useful, but not what for yet, hence why you have to search for a problem for it to solve.
Ah yes, Darth Pidgius - the most powerful Sith Lord to exist.
For the duckpire
And his apprentice Darth swanier
Darth Jar Jar's master
His tale is not one the Jedi would tell you
@@the_roman_emperor_fisheaterе
"A solution in search of a problem"
Sounds like me
Ok
@@simeonbain7742 Ok
Just makes me wonder what some other solutions in search of a problem out there that could revolutionize things if applied correctly
I'm a problem in search of a solution lol
are you the number 42 by any chance?
I am OBSESSED with this animation. It’s so smooth, and the simplicity and cuteness makes it all the better.
@@Agent-ic1pe ?
@@Agent-ic1pe I’m not sure. I just like the animation.
@@Agent-ic1pewell the power is what excites the atoms so I think the continuous electrical energy used to excite the atoms leaves extra energy converted into light. He didn’t say it but that’s what I think it is.
@@Agent-ic1peI think the energy was multiplying because of the laser machine
@@Agent-ic1pe you input energy to atoms to allow the photons to copy themselves
"Join the duck side"
the quote i didnt know i needed XD
so underrated
@@waterish4438because the comment was 2 months after the short was released even the best comments have a low chance of success if it’s a few months late
XD
Good one
This is where the fun begins
“I’ve been looking forward to this video!” Count Dooku voice
"Hello there"
POWER!!! UNLIMITED POWEEEERRRR!!!!!
I hate sand
photon duplication glitch (working 2023)
As a kid, I always wondered how light sabers didnt just extend all the way out
It's because they're plasma.
If they were real they would, or they would have something physical rebounding them
@@mjohnson2807 ever since I was a kid I'd imagine an extendable rod with a mirror at the end and lasers at it's base. it'd be more of a baton with a sheath of light but that's as practical as we'd get, considering the absolutely massive amount of energy required for emf to bend and trap light
well technically, that's because the laser is basically enegry coming from something called a kyber crystal which can be ignited and extinguished, and that energy is well, of course limited, but it can't really "run out".
Cos magic space wizards have space magic
Darth Vader: There is no one more powerful than me!
Darth Duck: Hold my lightsaber
Duck Skywalker walks in
*duck vader
Darthwing Duck?
Don't you mean light choir?
@@arihantmohanthind1547holy my heavenly choir of death rays
Laser is an acronym for "Light Amplification by Stimulated Emission for Radiation"
Wow!
Wow!
Wow!
Wow!
Google search. You searched on Google. I know you did
reject Darth Vader, now there's Duck Vader
Best comment I've seen in a while.
In deep voice* "There's only one Vader, and that's ME! DUCK VADER!"
The dark lord of the pond
Duck Vader LMAO
I am Darth Tax-Evader
Kurzgesagt can explain basically everything, but better, keep up the good work
I still wonder why this high quality videos are for free
@@strma8198add revenue ?
@@rishirajsaikia1323 Nah, they make most of their money through merch.
Just for giggles, if someone read your comment without mentally adding a comma, it has a different meaning 😅
@Chrishon Wyllie yeah I did that 😂
The way it said “Somebody once told me” makes me love this channel so much more
edit: why is everyone fighting over the lyrics in All Star now?
What's that mean??
@@dwioktavianwidyatama2532 it means that somebody once told me.
@@dwioktavianwidyatama2532 somebody once told me the world was gonna roll me, i aint the sharpest tool in the shed
@@dwioktavianwidyatama2532 SOMEBODY ONE TOLD ME THE WOOORLD WAS GONNA ROLL ME I AINT THE SHARPEST TOOL IN THE SHEEEEEEED SHE WAS LOOKUNG KINDA DUMB WITH HER FINGEEER AND HER THUMB IN THE *SHAPE* OF AN L ON HER FOOORREEEHEEEAAADD
@@dwioktavianwidyatama2532 WELP, THE YEARS START COMIN AND THEY DONT STOP COMIN
BACK TO THE RULES AMD I HIT THE GROUND RUNNING
DIDNT MAKR SENSE NOT TO FUN
YOUR HEAD GETS SMART BUT YOUR BRAIN GETS DUMB
"Somebody once told me"
Bros singing the shrek song 😭
THE WORLD WILL ROLL ME (i dunno what it said on the second last word
@@bettinatorres2921I ain’t the sharpest tool in the shed
It's not even called the shrek song😭
It's actually called All-star
@@user-qk7ml4zm9k thx for letting me know
This is how schools need to teach like EVERY subject, this was so simple to understand and entertaining
It's crazy that lasers were only invented almost two decades after nuclear weapons
I mean Germany had 1 more year in WW2 they would have had nukes.
And would have probably been glassed by the US or USSR
@@russkatherealoriginal6904Wait what is USSR?
Union of Soviet Socialist Republics, also called the Soviet Union, Russia, etc.
@@connor_ono3611just wrong, Germans didn’t even researched nuclear weapons , the US just thought so
"Pigeon, I am your father."
"NOOOOOOO!!!!!!!"
imagine a laser shooting towards u singing ariande grande
@@Sad_cat_studio no.
No duolingo I swear I’ll do my Spanish
You have failed me for the last time
Ahhhhhh
ErM aCtuAlLy ItS “no- I’m your father”
"Lark, I am your father" lol
And Kurzgesagt is already a master of the perfect loop! 😂
A loop is actually quite simple to create. Record the ending as the start
@@Duluper this is the only perfect loop I've seen in yt shorts
@@UnkownUnkown01Matpat does them pretty often
it's not perfect. it's a super common loop used by 1000s of shorts.
(you're just copypasting stuff you see online 🤫)
@@gordonlekfors2708it is perfect because the scene it begins on is the scene it ends on. That’s literally what perfect loop means.
“Bird, I am your father” - Darth Sith Bird
Bird Anakin : NOOOOOOOOOOOO!
@@Viana4 You mean Bird Luke right
@@gameknightplays1211 yes sorry for that because i forgot some character name and get changed name character to other character
@@Viana4 It's completely fine, I get it
The bird just said “Execute order 66” 💀💀
This next video involves deadly lasers and how Shorts viewers react when watching a video with deadly lasers
You are a man of culture. It's nice to see a portal reference in this comment section.
Maybe you meant Thermal Discouragement Beam
@@opliz2383 In one of the test chambers, GLaDOS says this: "(This first simple test) which involves deadly lasers and how test subjects react when locked in a room with deadly lasers." This test chamber introduced Thermal Discouragement Beams, which, by all means are deadly lasers.
@@xxcubesawayxx2067 yes
Or maybe
Light
Amplification
by
Stimulated
Emission
of
Radiation
@@opliz2383 Or maybe
Deadly
Eadly
Adly
Dly
Ly
Y
Lasers
Asers
Sers
Ers
Rs
S
can we just appreciate the amount of effort that goes into this 1 minute long video and the outcome is a high quality video
Or maybe just pay attention to the information instead of just appreciating it like the tool you are lol
I’ve been watching these guys since fifth grade and they never cease to entertain me
Edutainment 🙏👍🏻
@@m4ndo224fax
Yep
Ok, I callin' lasers "light choirs" now.
I'm calling it Light Amplification by Stimulated Emission of Radiation (LASER).
Wait a minute...
@@spaciousflame you are one of my people
@@spaciousflame hahahaha, good one
I have found my people.
@@spaciousflame it orginally called lasear or smthing
Everyone gangsta until Lightsaber Bird Pull Up
Yes, I remember when I was a kid in the 1960s reading about lasers - apart from scaling them up to be death rays, people had no idea how useful the would become.
POV: When You missed your Spanish Lesson with Darth Pidgius Be like
No duolingo I swear I’ll do my Spanish
You have failed me for the last time
Ahhhhhh
This is why I just fricking love Kurzgesagt. If I got a penny for every pop culture reference in Kurzgesagt I’d be richer than Jeff bezos.
Maybe Jeff bezos but certainly not Jeff Bezos. Or perhaps you own a storage facility solely for pennies... In which case, can I borrow some? For a friend, of course.
When they add amogus...
I never thought the day would come that they got ‘all star’ stuck in my head.
@@TheUnderscore_ Yesn't
@@susdj THE SUSSY IMPOSTER. >:D
Not the photons making faces and the atoms getting excited 💀💀💀💀
?
mammals
@@princemunir1489 🤣🤣🤣🤣🤣
Do people think everything is sus now
@@simonaxelsicat5478 You're my channel?
Duolingo’s long lost brother
The shrek reference got me lmao
True story: you can suffer any kind of light saber wound and survive if you're a main character.
I really like how you added the "sorry" part. Really adds to the charm as a team
And all that fit into a 1 minute video
I love the internet
I have read many books about this for so long but when you guys make a minute video about it I immediately understand it, Nice work!!
Well its simplified so ofc you understand it better
“How lasers work…” *shows a lightsaber that is physically impossible to create practically *
The HackSmith in question:
hence it is not a laser. In star wars canon it is a plasma blade kept in form by a magnetic field
Love how they use the "Impossible machine" Soundtrack
Really fits this :)
You missed the best chance to rickroll us
My thoughts too.😂
He did rickroll us tho
@@arinajurba1412he didnt
@@arinajurba1412it was Shrek
@@soulin11then it was a shrekroll
"Master Duckwalker there are too many of them, what are we going to do?"
Its laser time
I studied laser in a 3-hour lecture and this 60 seconds video sends the idea much better
I have a doubt, why is the energy is created out of no where like clone of photon ?
@@sitproperlywhilewatchingph423 we have in lasers an energy source that induces an object's atoms to produce a photon that starts the whole tale
@@sitproperlywhilewatchingph423the atom is exited. It has too much energy. A photon gives the atom a chance to remove that energy by cloning it, so it does that
knowledge is different from understanding.
@@sitproperlywhilewatchingph423 Because the electrons in the atom jump from the excited state to a lower energy level releasing photons
It's all quantum mechanics so i won't be able to explain it very much in detail
This video deserves an award for how smooth that loop was.
The photon choir is so cute
"A solution in search of a problem" is a saying that can be put into most things
"It's over birdkin, i have the high ground!"
Bro came up with choir of light and liked it so much they didn’t want to stop
Can we call lasers light choirs because they actually sound super cool
“I Darth Vader bestow upon you the title of “Darth Birb” may you slay thousands of rebels in your name”
This is how darth kurzgasagt made his lightsaber.
How you can get atoms excited:
1. Get some chill atoms,
2. Show them the whole FNAF timeline,
3. Show them the FNAF movie trailer.
Good job, ur atoms are excited now.
3. Dont let them touch grass
This is technically right. The human body is made by atoms and us getting excited is basically just a bunch of atoms getting excited ☝️🤓
@@Rahoteppppbro is onto nothing 💀💀💀
FNAF works better when used with "Furry" Atoms.
@@Rahoteppppso really we are just a bunch of lasers
The way it’s edited to make it loop perfectly is awesome
Every fucking short ever
@@max-jx5ne No, actually most of them don't loop "seamlessly" at all. It's only recently that I've seen people take advantage of the fact that shorts auto-repeat.
Birb? What're you doing birb? You're not gonna kill me ri-
The atom singing the Shrek song is a hilarious touch.
Missed opportunity to end the loop in “In a nutshell, that’s…”
Photon
Some photons
Atom
Some atoms
Photons hitting atoms
SOME BODE ONCE TOLD ME
A solution in search of a problem. Man i love this
that saying is probably 80 years old at least, but yea, welcome to Earth 😮💨
Impossible Machine is such a masterpiece. Very interesting the "Solution in search of a problem" quote!
Darth Ducky isn’t real, he cannot harm you.
Darth Ducky:
i see no one comment this. LASER stand for light amplification by the stimulated emission of radiation
yep that's basically it, thanks for the explanation sir.
LASER WAS AN ACRONYM THIS WHOLE TIME?
Shark with frikkin lazer beam attached to head
That explanation is beautiful
Is that Duolingo holding the Lightsaber? 😳
I love how the ending of this short flows perfectly into the beginning.
Like they always do. It's the rule.
as I saw the cat about to touch the laser I immediately think in my mind "NO CAT DONT TOUCH IT!"
ending the narration with "so basically" so that the first words when it restarts with "how lasers work" was cooler than the other side of the pillow!
And that folks is how Light Sabers exist
Not at all lmao
ah yes, darth duckling
He is shorter than I expected
my powers have doubled since the last time we met, duck
No, Darkwing Duck.
@Tburdboiw360 You underestimate my choir of light!
i started a war
Science is very intresting. Thank you.
Bro this dude teaches better than school😂😂
Oh my, now you just combined my two favorite things, choir class, and lasers
It’s so funny it said “Somebody once told me…”
HANDS OFF MY MACARONI
the world was rollin
MILWAUKEE PASTA BANDIT FOUND DEAD
Onions have layers
Lasers don't like sand. It's rough and course and it gets everywhere on the mirrors
Anakin doesn’t like sand it’s rough it’s course and it gets everywhere
All star lyrics lmaoooo
Almost sounded like somebody told me by the killers too
That” -sorry- “was funny 🤣
I just love colby, sam, seth and josh group so much, they're chemistry is just insane😂
A laser works by emitting light through a process called stimulated emission. Here's how it works:
1. Excitation: Energy is pumped into the atoms or molecules of a substance, known as the gain medium. This puts many of the particles into an excited energy level. Common types of gain media include gases like CO2 or Helium-Neon, crystal solids like YAG or Ruby, and semiconductor diode materials.
2. Stimulated emission: When an particle in the excited state encounters a photon of the same frequency, it releases its energy as another photon of the same frequency, phase, and direction. This is called stimulated emission. The newly emitted photons then trigger other stimulated emissions, resulting in an amplification of light.
3. Optical resonator: The emitted photons bounce back and forth between two highly reflective mirrors, called the optical resonator. On each pass through the gain medium, more stimulated emission and photon amplification occurs. This results in the light reflecting and amplifying many times.
4. Output coupling: One of the mirrors is only partially reflective so that some of the amplified light can exit as a high energy laser beam. The difference in reflectivity of the two mirrors, known as the cavity loss, determines how many reflections can occur and thus the output power. Higher loss means fewer reflections but higher output, while lower loss means more amplification but reduced output.
5. Continuous wave or pulsed: In continuous wave (CW) lasers, the energy pumping into the gain medium and light amplification is continuous. In pulsed lasers, energy is built up and then released in the form of short, powerful pulses of light. Pulsed lasers achieve much higher peak power, though lower average power.
That covers the basic idea of how a laser works through the process of stimulated emission and light amplification within an optical resonator. By controlling properties like the gain medium, optical resonator, and energy input, lasers can produce light ranging from infrared and visible wavelengths all the way up to X-rays, with a variety of output durations and power levels for different applications.
By: chatgpt
I've studied Lasers in detail and I can say this is pretty spot on. Good job, Chat GPT, good job
@@hermannbarbato Seriously suprising since chatgpt is just for things that seems real and seem like the right answer, even if they aren’t actually and just lies.
Worth noting: It is generally accepted that lightsabers do not use laser beams. Rather, the blade of an active lightsaber is made of plasma.
Lasers don't have to be high energy. The energy in red laser pointer is very low, much less than a flashlight. However, it can be focused to an extremely small spot, potentially creating very high energy densities.
THE WORLDS GONNA ROLL ME I AINT THE SHARPEST TOOL IN THE SHED
"a choir that sings with light" YOO THAT GOES HARDDDD😂
Laser is short for "light amplification by stimulated emission of radiation" and i learned that from a Sonic Meme on TH-cam
The world is gonna roll me
I ain't the sharpest tool in the shed.
She was looking kinda dumb.
@@sukokium She was looking kind of dumb with her finger and her thumb
@@brilykatigbak5419 In the shape, of an L, on her forehead
Well, the years start coming and they don't stop coming
"a solution in search of a problem"
LIGO has entered the chat
Sharks in search of a hot meal have entered the chat
love how the demostration goes pretty slowly but in reality this goes at the speed of light
"DUEL OF THE FATES STARS PLAYING INTENSELY"
Kurzgesagt, I LOVE YOUR VIDEOS!! But Quantum Foam was my favorite.
same here
But its not the answer i need
For what would happen if you drop
The lightsaber upside down
It go down
it'd retract
They answered this in the last episode of Rick and Morty. Morty droped the lightsaber upside down and it was about to hit the earth's core.
It would get stuck at the hilt. If it had a hilt (handle) narrowerer than the blade then it would fall through the earth until it got to the middle of earth's core. It would bounce around inside the core for a few minutes, constantly falling "past" the gravitational centre of the planet until it eventually didn't have enough momentum to continue moving. At that point it would sit in the very middle of the planet forever. The hole it created on the way down would instantly close behind it (due to the pressure and molten rock). It'd be totally harmless and you'd have no way of knowing it was even there. Of course, a "real" lightsaber would get stuck as soon as the blade went through something solid in the ground (like a rock or even some wood) as the handle is wider than the blade. It'd be like poking a sword through a piece of cardboard - the whole blade goes through easily but the handle wouldn't let it go any further. If it did keep falling then after about 15-20 miles (25-40 kilometers) the liquid magma would simply melt the metal handle, which would mean that the complex components of the lightsaber would break and it would turn off forever very quickly.
Lightsabers don't won't like in Richard & Mortimer Esq., unfortunately.
@@Cortanakyacrazy yap session
A solution in search of a problem. I love it
I like how they published it even before they knew if it would be useful at all.
@TH-lu9du MASARs already existed in the 1950's This was an improvement for using shorter wavelengths.
"how many pop culture references and jokes do you want in this short?"
"yes"
Dark Vader has been real quiet since this dropped.
Light Choir. Love it😂
I love how they work, it’s pretty interesting to know it!
Flicks on lightsaber: OOOOOOOOHHHHHHHHHHHHHHHHH
A solution in search of a problem is an understatement
That transition was *chef's kiss*
The fact that I didn't understand how the heck does the atom multiplies the light is so freaking cool!
The fact that I don't understand how water faucets work is so cool! I'm the coolest person bc simple things confuse me.
The amplification part wasn't explained correctly. There's a stimulation step that must happen first. Then, a single wavelength is amplified out of all the light the atoms emit. The distance between the two mirrors must be an exact multiple of that wavelength.
You were the chosen one!! You were supposed to destroy the sith not JOIN THEM!
You were supposed to bring balance to the force, not leave it in DARKNESS!
@@TheRealRyomen_Sukuna
You were choosen 1!¡ and your not supposed to comment NOT JOIN THE COMMENT‼‼
"Somebody once told me" 💀💀
some 🚪🦵 BODY ONCE TOLD ME
"When the first light choir- sorry- laser..."
Gave a ZeFrank1 vibe.
"Am I a bad person?"
"HELL YEAH"
Why did the singing protons form a laser choir?
Because they wanted to hit all the high notes and make a "beam"-ing performance!
The funny thing is that he released this video just after my college physics lecture on lasers was over.
That was a sith lord!
No shit!
I like how u explain complicated things in a Easy way,keep It up bro♥️
Everybody gangsta till a bird passes through a laser.