And now we use them to fuck with cats.

@cortster12

7 жыл бұрын

We use them for almost everything.

@hoopsmontrer9887

7 жыл бұрын

+Cortster I use mine to point out stars

@holycrusader8372

7 жыл бұрын

i use them for blinding cats

@inactive9384

7 жыл бұрын

Holy Crusader your cruel

@shakenbacon993

6 жыл бұрын

*you're

I know the words, but I don't understand them in that combination.

@Supermario0727

7 жыл бұрын

I understand some of this. Hugh school chemistry will teach you some of this stuff.

@arnovictordorian8533

7 жыл бұрын

John Stuart Hugh School? Hugh Mungus has a school?

@louf7178

7 жыл бұрын

Jay Kay lol. Yes, I have the winning lottery numbers. Just have to get the right order.

@KM-fckutube

6 жыл бұрын

Jay Kay, those were my thoughts exactly.

@arkhe1n107

6 жыл бұрын

Thankfully you're not alone.

I love how mark hamil explains lasers

@nickhighland799

7 жыл бұрын

he should have shown us his lightsaber, I'd like to know how that works.

@Nothing_serious

7 жыл бұрын

Samir Shrestha He's tired of Batman

@MrTonypetrucci

6 жыл бұрын

Beam me up! Scotty!!!

@ingrid2033

5 жыл бұрын

Can mark hamil explain how does mark hamil explains light ?

@MsAhutch

3 жыл бұрын

This is Clark Hamil, his lesser known but much smarter older brother

This guy looks 16 and 61 at the same time. (Loved the video.)

@Bigmilklord

3 жыл бұрын

Wow hello there

@silkwurms

3 жыл бұрын

Last place Id expect to see him

@Bigmilklord

3 жыл бұрын

@@silkwurms same

@shaneh1003

3 жыл бұрын

It's the haircut.

@joshuacabezas8061

3 жыл бұрын

why is this true

In the early 60s, somebody wrote 'The laser is a solution looking for a problem'.

@myearshurtnoone1367

7 жыл бұрын

sounds like hysteria to me

@spoonikle

7 жыл бұрын

+myearshurt Noone it's based on an old saying "hammer looking for a nail". imagine your local overzealous neighborhood watch desperate to feel useful and trying to solve problems that are not actually problems. basically back in the day nobody thought there was a use for lasers and laser advocates where just running around with hammers smacking at everyone's inventions.

@kriswilson5305

5 жыл бұрын

spoonikle You clarified that wonderfully. Thank you.

@sciencecompliance235

5 жыл бұрын

"Laser inventor DESTROYS critics in this EPIC video"

@ThZuao

5 жыл бұрын

Hapens quite often in the engineering world. I bet the people behind the creation of the LASER itself didn't expect much off it. Maybe just the Rangefinding aplication. Hero of Alexandria didn't expect the Aeolipile to be more than a mere curiosity. It took 1700 years for someone to figure out the principles behind the device's inner workings and do something with it, and when it happened, it changed the world forever.

I'm not familiar with your career Sir, but if you don't do voice over and narration work then the world is missing out.

@ieuanhunt552

6 жыл бұрын

DPS he should definitely do a narration of that book he promotes at the end of every video. I would buy it

@munjee2

6 жыл бұрын

DPS check out his audio books

@computername

5 жыл бұрын

Not sure what it is, but something tells me he must be doing some tech stuff. Maybe even engineering..

@chillpillology

4 жыл бұрын

Reminds me of bill curtis a little bit

This video is professional as fuck!

@LazyScoutJace

7 жыл бұрын

Totally reminds me of FilmmakerIQ

@S....

7 жыл бұрын

Could you please give me a definition of a professional fuck?

@sebastiang8634

7 жыл бұрын

Prostitution?

@aholicrealm2850

6 жыл бұрын

A. Goraya lol

@robertthomas4329

6 жыл бұрын

Unlike you

I have always taken time to explain how things actually work to my kids when they ask and having discovered your video's I am proud to say they were absolutely glued to the screen. KZread should have more educational material like this. To bill directly you sir make the learning fun your selection of props examples and references are excellent. You have taken some very complex subjects and made them interesting and fairly easy to follow Thank you.

You should get paid by governments for making these high quality and very clear videos.

@beybladeguru101

7 жыл бұрын

Anything the government does, it fucks up, or is vastly inferior to the private sector.

@Lorpark

7 жыл бұрын

ZootMiBalot why not?

@Lorpark

7 жыл бұрын

ZootMiBalot why?

@jesusec100

7 жыл бұрын

Why not?

@dannywilliamo

6 жыл бұрын

Lol everyone roasted you, but he is a University of Illinois professor, and is therefore paid by the State of Illinois in part to make these videos, as well as teach a class at the school introducing engineering to freshman and sophomores.

Nice voice....good presentations... but still didnt understand.

@ChesterChi3

5 жыл бұрын

To understand how lasers work, first you have to already know how lasers work...

@strong8705

4 жыл бұрын

Maybe it's a teaser for a book.

@5udimax

4 жыл бұрын

@@ChesterChi3 what is this, recursion?

@dougschmierer7750

3 жыл бұрын

He uses too much jargon while making few attempts to define anything. His visuals are simple, which is good, but they attempt to cover too many concepts, which is bad. His sequencing is too rushed and lacking in transitional cues; he jumps from one feature to another without clearly concluding the previous feature or introducing the new feature, so part of your confusion is that you're trying to figure out how new information relates to the last when it likely doesn't; they simply share a theme of "lasers". Basically, this guy is a prime example of why companies pay technical writers to explain engineers' products for them.

@johnjordan3552

2 жыл бұрын

You need to know some at least beginner atom physics

Excellent description of how a ruby rod laser works. Seen it in many diagrams over the years - but this explanation brought it all home for me. Well done!

Dear Bill, thank you so much for so succinctly explaining how a laser works. I sort of had a general idea, but your video is so comprehensive and easy to understand. Science has always been my favorite subject, and being that I am writing one of my books on focusing, I decided to use the laser as an example of how light is focused, and your video was a God send in my understanding it. It gave me the tools that my tired mind from writing for the last fourteen hours needed to complete the chapter that my deadline requires. Bless your heart, and thank you very much once again, Fredrick Fowler

@DeadBread.

2 жыл бұрын

Its been Seven years, How's Your book coming?

@engineerguyvideo

2 жыл бұрын

At the publisher now!

@angelostodomingo5570

Жыл бұрын

@@engineerguyvideo bill please make more videos

I just realized he teaches at the college in my town. So cool!

@worshipwithjonathan

3 жыл бұрын

what place, which college?

@mrtristan6145

3 жыл бұрын

What does he teach?

@luise213

3 жыл бұрын

@@worshipwithjonathan UIUC I assume, given what the caption shows at the beginning of the video when introducing him

@rabiaaslam3186

3 жыл бұрын

You must visit

@worshipwithjonathan

3 жыл бұрын

Im in germany, half way around the world haha

And this is why Cyclops's visor is made of ruby.

@jonathanw1019

3 жыл бұрын

Ruby quartz. They're not the same.

@josefish5193

3 жыл бұрын

@@jonathanw1019 three year old comment....

@jonathanw1019

3 жыл бұрын

Josefish that’s fine. 3 years, 90 likes and not a single person corrected them. Somebody had to do it eventually.

@wsketchy

3 жыл бұрын

@@josefish5193 The wonder of the internet is that it's not like you're speaking to an empty house, the message will still be there when the occupant returns. You can say something at any time and eventually someone will see it.

@DarkAngelEU

3 жыл бұрын

@@wsketchy Kinda creepy though, isn't it? We're constantly looking at the past as if it were present. Our future is becoming history within this space outside of time.

I watched so many videos but that is the video which deeply clarified the working and the cause of Laser beam.

Very well explained. I knew about the ruby laser but I didn't know its operation. Great to have shown the ruby ball glowing when illuminated with blue light. Thank you!

I really love this channel . You go precisely into the right depth needed to explain the most important functions. There aren't many groups that will take the time y'all have. I'd compare you to, mr wizard if I could. Maybe even better

@Observ45er

8 жыл бұрын

+rocklobster1976 In my opinion, Don Herbert is the gold standard... (except for the two things I am aware of that Don (at least his researcher) got wrong). -- Cheers

@-Maverick.

2 жыл бұрын

yeah

Thanks Engineer Guy! My students will love this as much as/more than I did!!! We're studying atomic structure.

@ft_lesserchungus1192

2 жыл бұрын

engineer gaming

@w04h

11 ай бұрын

@@ft_lesserchungus1192 engineer gaming

These videos are fantastic, extremely well explained, and well thought out. Thank you @engineerguy

Love these videos! Your channel is often the first place I hear in depth about these remarkable feats of engineering. You're doing great work for laymen such as myself :D!

2:35 - 3:34 so, basically magic.

@frankytoad12

7 жыл бұрын

Jesus did it.

@pumpjackmcgee4267

7 жыл бұрын

Lasers of Jesus would be an awesome band name.

@frankytoad12

7 жыл бұрын

I believe you're onto something my friend.

@pokemonplanet4153

7 жыл бұрын

Alex Myers damkig

@MrMalibujunkies

7 жыл бұрын

fotoelectric effect :)

I love these videos because learning is fun, thanks for making some of the best videos on KZread.

I liked it, it was very well explained, although I was hoping to find a little bit more information about the behaviour of the electrons and the different types of emission and absortion of light.

Thank you, engineerguyvideo; I love your treatment of the subject matter -- it maintains comfortable rate of change in perspective that ensure the information sustains the interest of the viewer while staying close enough to remain an easy to relate whole. I'm glad I've subscribed.

Made perfect sense thx!! Imma build one now

i like his voice and what a great clip!

this is the first time I saw an Arabic translation on youtube made by a non Arab great work thank you for your effort and to make your knowledge accessible almost to all human kind

Well done!! Good explanation of the energy states, just enough detail. Thank you!

I still didn't understood completely. It was interesting anyway.

@yotams6168

5 жыл бұрын

If you had never learn physics before it maybe will be hard to understand, but if you will be able to understand the basic of it (Bohr Model) I think it will be clear - en.wikipedia.org/wiki/Bohr_model .

@-Maverick.

2 жыл бұрын

are you alive?

@engineerguyvideo

2 жыл бұрын

Me or the commenters above?

@-Maverick.

2 жыл бұрын

@@engineerguyvideo the commenters. Also how did you reply so fast?

@engineerguyvideo

2 жыл бұрын

I typed

Wait what?

You explain things so wonderfully and you respond to fan comments promptly. I am so damn subscribed. Keep'em coming!

your ability to keep things interesting never ceases to amaze me!

Hey look, it's Mark Hamill!

When he said "ruby rod," who else besides me flashed to The Fifth Element?

@formdusktilldeath

6 жыл бұрын

you beat me to it, by a year no less. UNBELIEVABLE!

@flappy7373

6 жыл бұрын

i already wrote this exact same thing.. you beat me to it by 3 months and dan beat me to it by a year haha

@Cammi_Rosalie

5 жыл бұрын

Dan sweetheart, what was that? ...It was BAD! It had no fire, no energy, no nothing! Ya' know I got a show to run here, and it must pop POP POP!!! So tomorrow from 5 to 7 will you please act like you have more than a two word vocabulary. It must be green, okay?

@Preinstallable

3 жыл бұрын

I have the fifth element on a dvd

@boomerhgt

3 жыл бұрын

Nobody

Very well done, my friend. Thank you.

Very informative. Thank you Engineerguy. I would appreciate more information on the subject.This was laser 101. I would like to see expansions to your information. I know that ruby is not the main medium for lasers anymore, so I would love to see information on light spectrums, wavelengths, power, (etc) and how they tie into our modern lasers of today.

Was lost by 2:30

@yotams6168

5 жыл бұрын

If you had never learn physics before it maybe will be hard to understand, but if you will be able to understand the basic of it (Bohr Model) I think it will be clear - en.wikipedia.org/wiki/Bohr_model .

Great video but the animation regarding the treatment of detached retinas looks like damage control and not welding in back on as described.

@mozkitolife5437

2 жыл бұрын

@Major Problems Thank you. So I was right? There's different procedures for welding the retina and the animation merely demonstrates how the detachment is prevented from progressing.

The most concise yet coherent explanation of LASER I have ever come across.

Bill, we are very big fans of yours and must tell you that you present this video as if you are running late and have to catch a bus! This one appears rather below the "bar" you typically have for yourself. Thanks for the effort but you just might ponder this format! Best of luck!

If they ever made Jurassic Park real, I’d like you to be the new Mr. DNA

@R2D6_10

2 жыл бұрын

lmao! dude, you nailed it!

Question: Why specifically Ruby? Do other corundum gems exhibit that same property?

@Squirrel_314

7 жыл бұрын

I don't think it's the aluminum or oxygen in the corundum that actually gets pumped, but the chromium impurities. Other sapphires might be able to lase, but perhaps not in the visible spectrum, which is rather narrow?

@jammccockin8304

5 жыл бұрын

Michael yes. my thoughts exactly... but you forgot to carry the 1.

@casparvoncampenhausen5249

3 жыл бұрын

@@jammccockin8304 😂

Well done, articulate accurate and easy to understand, and you have a soothing voice.

This is super amazing and with a nice fundamental explanation. Thanks

Where did you get the ruby from I want some

I understood up until 2:19 then I thought.......... ???? So basically I learnt they have rubies in them with some glass beads...... OFF TO THE NEXT SCIENCE VIDEO TO HALF LEARN SOMETHING!

@oldfrend

8 жыл бұрын

+ReaLzEdits no glass beads. he was just using them as an example of a material that doesn't give off light and comparing them to the ruby that does.

@ReaLzEdits

8 жыл бұрын

***** See I'm fucked xD

@oldfrend

8 жыл бұрын

ReaLzEdits ok you want a simpler explanation? see how the ruby shines when he turns the flashlight on it? make the ruby a tube, make the flashlight like a million times stronger, poke a hole in one end of the ruby, BAM, laser.

@TheFungck

8 жыл бұрын

+ReaLzEdits the video do not explain "stimulated emission". and the picture is not correctly explain the population inversion. in stimulated emission, when light hit the electron to excited state, it will double the income light. Two "mirror" will reflect the light backward and this process repeat many time until "light" are very very strong to exit through the mirror. It is still over simplified but still better then not explain.

@TheFungck

8 жыл бұрын

+ReaLzEdits "ruby shines in flashlight" is fluorescence not laser....

More videos please Bill! These are amazing.

I remember reading about this in the book, "Lasers and Masers". Very nicely demonstrated. Thanks for sharing this.

Can you do one on green lasers? Their mechanism is different, and I would love to hear you explain it!

@fxDELTAx

7 жыл бұрын

The principle is the same which you are still exciting electrons into a higher energy state and allowing the electrons to relax back to its ground state. But the material is different. The wavelength (color) depends on the energy difference of the excited state and the ground state for that is the energy the electron gives off when it relaxes. This would require different materials, many green lasers today are uses semiconductors as the lasing medium.

@Doom2pro

7 жыл бұрын

Not really, most Green Lasers are using an Infrared laser passed through a small doped crystal that changes the wavelength to green. I believe this is what he is referring to.

@AeroElectro

7 жыл бұрын

MrMattsung Look up frequency doubling. Or second harmonic generation. Focused light passes through a non linear crystal where SHG effect produces wavelengths of half of the original.

still no idea lol

@Tomwesstein

7 жыл бұрын

I kept looking at the four red dots moving to the excited, lower energy and ground state, listening at his explanation and thinken: what on earth is he talking about and why dont these dots decide where they want to be?

@TSTrueSanctuary

7 жыл бұрын

+Tom Wesstein the dots go into the excited state because they're given energy from the outside light but they always go back to ground state by shooting out the energy as light because theyre lazy dots

@Jack2Japan

7 жыл бұрын

+Tom Wesstein - Yes, make up your mind(s) already!

@randominternetprofile8270

7 жыл бұрын

it's really basic quantum mechanics.

@torugho

3 жыл бұрын

@@randominternetprofile8270 and?

Ahhhh! Best channel on any media (for me). Can’t wait until he comes back with more. Thanks!

sincere thanks for making this video

Ok ..i found this channel yesterday and i watched like 20 videos And i know nothing about these engineering

Bill the EngineerGuy vs. Bill Nye the Science Guy. They must fight in a cage!

@Dargonhuman

7 жыл бұрын

A cage ... made of lasers!

@rocking195

6 жыл бұрын

Bill nye is also an engineer guy

@jek__

5 жыл бұрын

Engineer fight! Someone break out the battlebot kits

Bill, One of the most enjoyable channels on yt. And a voice of tranquility. 👍

Wow that was really informative! thanks for sharing!

I learnt about how lasers work last year and he pretty much covered a weeks worth of lectures in this video. Basically, when the ruby is given enough energy an electron will be 'excited' into a higher energy state. when the electron drops energy state, energy is emitted in the form of light, thus laser. Hope that helps a bit.

Wrong about "exact length of the rod". Length does not matter.

@LAnonHubbard

7 жыл бұрын

That's not what my wife said. Just before filing for divorce.

@steve24822

7 жыл бұрын

WildMania Correct, it's all about girth!

@19.sciencetechnology30

7 жыл бұрын

WildMania That's not what she said! lol

I've been through the laser treatment for retina thinning, not the most fun experience. Very cool to learn more about it!

*This is so well presented and fascinating to watch.*

2:14 “lasing”

Both mirrors have to be concave for this to work aka for the gaussisn optic to allow a mode

@psycronizer

5 жыл бұрын

flat out wrong...

Amazing job, Bill. Thank you!

awesome explanation! thank you for your excellent work on this

but can you tear apart the Lazer pointer so we can see it.

>scans his own book shameless self promotion

@VamosRapidocom

4 жыл бұрын

Maybe he should scan yours

@strong8705

4 жыл бұрын

4 minutes ad.

@gustavoturm

4 жыл бұрын

C'mon, he is doing awesome work, I approve his ads.

Awesome video - thanks for posting!

You guy are nothing short of awesome. Keep on keepin on. I'll keep hitting that like button

Ruby rod? like that pop singer in 5th element?

Wait... I tought lasers don't need a lamp or a ruby. Was it an older version of a laser he was explaining?

@MultiSciGeek

8 жыл бұрын

TheArmFlailer Never knew that. How come lasers are so cheap and affordable then? Are the gems impure or very small?

@MultiSciGeek

8 жыл бұрын

TheArmFlailer Alright I see. Then what is the other laser with gas inside and no lamp? Only switching electron states?

@MultiSciGeek

8 жыл бұрын

TheArmFlailer Oh ok. Thanks for explaining

@AlexForencich

8 жыл бұрын

There are many ways to make a laser. All you need is a laser cavity, a gain medium, and a source of energy. In the ruby laser, the flash lamp provides the 'pump' energy and the 'pumped' ruby provides the gain medium. Mirrors create the cavity. However, other things can be used as a gain medium. Helium neon lasers use a combination of helium and neon gas in a tube. Electricity passed through the tube provides the energy, the excited gas provides the gain, and the mirrors at the ends of the tube form the cavity. Diode lasers use specially doped semiconductor to form the gain medium with electric current providing the energy. The laser cavity can be formed a number of ways - cleaved semiconductor faces, distributed gratings, etc. Lasers can be used to pump gain material as well, for example erbium doped fiber amplifiers use lasers to pump energy into a section of glass optical fiber that contains a small amount of erbium to form the gain medium. This can be built into a laser, but more commonly it is used to amplify optical signals in a fiber so that they can be sent hundreds of miles. The gain medium can also be a liquid - lasers called dye lasers circulate liquid dye as a gain medium and can be pumped with flash lamps or other lasers to produce light with specific properties.

@MultiSciGeek

8 жыл бұрын

Alex Forencich Yeah that's the type I was thinking about, like how do they make all the multi colored lasers. Thank you for explaining :)

Amazing man. Very in depth and high quality videos. Subscribed👌🏼🔥

Feels like I'm watching Nova... or Modern Marvels. Super high production value, great job!

136 people have been shot (and probably horribly disfigured) by lasers.

@manualLaborer

7 жыл бұрын

hmmm. is she at least 12? >_>

@seethisth4753

7 жыл бұрын

Where is she?

@bruhforreal5730

7 жыл бұрын

otacon333x2 I've never seen such an amount of sarcasm radiate through a comment.

@DallasGreen123

7 жыл бұрын

manualLaborer so funny and original, how do you even come up with something like that

@19.sciencetechnology30

7 жыл бұрын

This is how the human penis erects! Upon seeing an attractive human, the eyes send a pleasure sensor to the brain, which instantaneously creates a surge of blood through the body's vein channels connected to the males testicles, resulting in an overflow of blood pulsating within a confined area of vessels. As this occurs, a rapid production of energy builds within the testicles producing millions of sperm! When the testicles become full, the sperms are released through the hole in the penis. Once all of the sperm is released, the energy relaxes to ground level, producingin a state of relaxation. The male then becomes very tired and falls asleep for several hours.

engineerguy I recommend you to slow down while speaking to grasp the ideas you want to deliver ! Special thanks

@thedevo01

8 жыл бұрын

+AbdulAziz AlHaidari - Yeah, the music implies that he's talking to 9-year-olds, but he's pouring information on the listener like they're a fellow engineer.

@Paradox3121

8 жыл бұрын

These videos are not that difficult to follow... but in any case, you guys know you can watch a video on KZread more than once, right?

@ManuAnand97

8 жыл бұрын

+AbdulAziz AlHaidari I don't have any problem. You can turn on the Captions and/or slow down the video at the part what you couldn't understand.

@thatonedevastatingleek380

6 жыл бұрын

Devo Castler As long as you've taken highschool science you'll get it

@ix12

6 жыл бұрын

Yeah, he is a bit fast and I have to pause and read, but I prefer it that way rather than if he'd be too slow and make me lose patience, I would never watch his videos then :)

I’ve watched like every video, truly the people’s work. Bless you Sir

The background music improves this enormously - thank you.

Isn't it crazy that the same specie that is able to come up with stuff like this also engages in primitive behaviors such as chopping each other into pieces with machetes or blowing each other up with explosives? Usually for absolutely ridiculous reasons such as ethnicity, race or religion. It's staggering how smart and stupid humans can be at the same time.

@davidb5205

7 жыл бұрын

That's due to differences between individual and collective behavior.

This guy is great, but that hair of his could sure use some engineering.

@hack3line

8 жыл бұрын

+Pharaoh Polystyrene I think in the next video he will show how to do hairstyles like Albert Einstein, Donald Trump, Michael Jackson, Lagertha, Ragnar.. what kind of engineering stuff did the Vikings brought into English world to do a lot of hair styles.. probably will also discuss why Pharaohs hide his hairs under his hat, what kind of engineering did happen during Pharaohs era that the Nefertiti head become soooo biggggggg and hugeeeeeeeeeeee !!!

@vincenttripi4700

6 жыл бұрын

B. Smith I'm dying laughing.

@3melendr592

6 жыл бұрын

B. Smith That loss of hair comes from a brain that works so hard there's no nutrients left for hair. Lol

@Ozlizardking

6 жыл бұрын

B. Smith he must have stockpiled conditioner from the 80s.

@author4932

6 жыл бұрын

B. Smith engineering xD nice expression :D :D

Amazing as always. I got the book!

Ooooo thanks for this video! Really easy to take in and digest. An inspiration for teaching!

2:30 Good job at confusing the population there, why don't you show an atom instead? why don't you show electrons jumping from different energy levels and release photons?

مين جى من عند محمود مجدي ☺️🤍🤍

@abdoskiller1048

Жыл бұрын

هو انت بتزاكر الدرس قبل ما تاخده ولا ايه

I've always wanted to know this. Thank you so much !

I have to say I read the comments before watching the video and I wasn't expecting to understand it because most of the comments say how complicated it is. Yet to my surprise I understood it and I really enjoyed it, looking forward to more of your videos!!

It's been said before, but it can never be said enough: your voice is beautiful.

This is fascinating, I'd love to see a video like this describing how a Maser works.

Didn't really catch the photon emission stuff but the amplification in the Ruby Rod (TM) I got. Nice!

I really enjoyed this video, Ill keep an eye for any more you share.

I can't stop watching your videos!

Thank you very much for the video!

Had to watch that twice, but I think I understand :D

Absolutely amazing !

You answer always questions I never asked myself before 😂

Bill, I love your rapid fire delivery. Don't change a thing! If I didn't catch something you said the first time around I can replay the video as many times as I need. This is the internet after all :-)

Dude this was amazing!

Oh I see! Thank you so much for the reply and all your videos!

Amazing presentation!

Keep making new videos they are very helpful

Esto es lo que siempre estuve buscando, Gracias

*I wish you made longer 30 min videos going more in depth you are so good at explaining things want to learn more*