- published: 16 Dec 2016
- views: 1933007
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light coherently. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light. Temporal coherence can be used to produce pulses of light as short as a femtosecond.
Among their many applications, lasers are used in optical disk drives, laser printers, and barcode scanners; fiber-optic and free-space optical communication; laser surgery and skin treatments; cutting and welding materials; military and law enforcement devices for marking targets and measuring range and speed; and laser lighting displays in entertainment.
BUY LASERS HERE: https://goo.gl/gGG9Nd YouTube channel of Wicked Lasers: https://goo.gl/Lsrg4p In this video you will see some interesting experiments that can be made with laser pointers. I am using 4 wicked laser pointers. Arctic, Krypton, Inferno and Lunar. Music by TheFatRat ("Windfall”) Licenced by Tasty https://youtu.be/Bamvg4Icmi0
Just finished building my 40W(!!!) laser shotgun!!! The output of this laser is complete insanity, and is made up of 8 parallel 5W laser beams totaling to 40W. The parallel beams are manipulated with lenses, sort of like how a choke modifies the spread of a shotgun blast. Follow me on Instagram to see some crazy stuff!! :D https://www.instagram.com/styro.drake/ The massive diode array is powered by a huge lithium polymer battery pack (capable up dumping 250A) and the laser array is regulated by a whopping 24 LM317 drivers. Follow me on FaceBook and see my video clips that don't get posted to YouTube!! https://www.facebook.com/diylaserguy For licensing/usage please email licensing@rumble.com. Check out http://laserpointerforums.com to learn more about laser pointers, lasers, and laser...
Bill shows how the three key characteristics of laser light - single wavelength, narrow beam, and high intensity - are made. He explains the operation of a ruby laser - the first laser ever made - showing how electronic transitions create stimulated emission to give coherent light, and then how the ends of the ruby cavity create a narrow wavelength highly collimated beam. You can learn more about laser in the EngineerGuy team's new book Eight Amazing Engineering Stories http://www.engineerguy.com/elements
►►SUBSCRIBE HERE►► https://www.youtube.com/c/gadgetjefftv?sub_confirmation=1 http://www.jetlasers.org - Large 1500mw Laser https://www.laserbeelpm.com - Laser Power Meter Episode 11 - Wicked Lasers | 1500mW High Power Blue Lasers!!! I did purchase four of these lasers to re sell but then figured out eBay does not allow it. If you are interested, I am trying to sell them for $80 a piece which includes shipping. Please message me if you are interested. Welcome back to Gadget Jeff TV. Today we will be quickly reviewing some crazy wicked lasers. These things are no joke. Rated at over 1500mw in power. These lasers have the ability to pop balloons, cut through tape and even strike matches. Unfortunately, they are quite dangerous. Severe eye damage can occur if proper handling and...
Worlds Most Powerful Handheld Lasers vs iPhone 7 & Nokia 3310! Wicked Lasers Arctic Spyder 3.5mW, Inferno, & Krypton Series. DO NOT TRY AT HOME. Taser vs iPhone 7: https://youtu.be/ad53oSMB8hw USB Killer vs iPhone 7: https://youtu.be/BlgwV5unTO4
Wicked Lasers Arctic Spyder III 1W Blue Laser! Check out the Spyder III here: http://bit.ly/BuyWickedLasers GET A FREE DIY MINI-COURSE http://kipkay.com/DIY BUILD DIY STUFF EVERY MONTH http://kipkaykits.com Subscribe to Kipkay: http://bit.ly/SubscribetoKipkay LIKE on Facebook https://www.facebook.com/KipkayVideos FOLLOW on Instagram: http://www.instagram.com/kipkayvideos Check out my other channel: http://www.youtube.com/gadgetvideoreviews\
How does a laser really work? It's Bose - Einstein statistics! (photons are bosons) Check out Smarter Every Day's video showing lasers in real life: http://bit.ly/uBwhU2 Trying out a new feature: English Transcript! Let me know how it works Tweet it - http://bit.ly/uZchvb Facebook it - http://on.fb.me/u4Yfvr minutephysics is now on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder youtube: http://bit.ly/pakJLE myspace: http://mysp.ac/qtmZQj Created by Henry Reich
In this epic video we're dodging lasers with our friend Guava Juice to take the Team Edge trophy! Bean Bucket Challenge! ➡ https://www.youtube.com/watch?v=r_HmReIg3mE Subscribe To Team Edge! ➡ https://www.youtube.com/channel/UCaRH3rDr3K3CEfhVqu5mgUQ 🔽MORE LINKS BELOW 🔽 Matthias ➡ https://www.youtube.com/user/matthiasiam?sub_confirmation=1 J-Fred ➡ https://www.youtube.com/user/mrjollywhitegiant Bryan ➡ https://www.youtube.com/channel/UCFN1GcJz2gqBW9dn9IEDQcw Team Edge Gaming ➡ https://www.youtube.com/channel/UC-6Ygz2yrPcPPhl4pAobqNQ Mail Box: 24307 Magic Mtn Pkwy #211 Valencia, CA 91355 TEAM EDGE SHIRTS ➡ http://goo.gl/BDFm6X Support Us On Patreon ➡ https://www.patreon.com/matthias Twitter ➡ https://goo.gl/rbKKmG Instagram ➡ https://instagram.com/itsteamedge/ Challenges ➡ Monday - We...
This video compares some of the most common power outputs of green lasers you can buy these days. I compare the difference in visibility and burning between 5mW, 15mW, 35mW, 50mW, 100mW, and 150mW. Important info after watching this video: -I used fog to bring out the beams. -This video is only about green lasers because they are nearly always fixed focus and have a small beam diameter. -I mention powers where tricks are EASY to do. You may be able to pull off burning tricks with less power than what I state, but these are bench mark powers where you can reliably do these burning tricks. -Additional focusing with extra lenses can lower the threshold of what you need to burn. Watch my focus video for a better explanation of this. -I go by actual power of these lasers in this video, not ad...
Check out these funny animals chasing lasers in this funny animal chasing laser pointer videos compilation.
there's only two ways out of here
you wait too late, you'll be trapped here forever
there's only two ways out of here
one's through the door
the other is through me
sometimes living in a world like this
is pretty hard not to go insane
not pretty if you don't comply
pretty easy if you don't complain
stand there like you don't feel pain
no tears in the face of defeat
pretend to the end that you don't feel change
don't admit that your faith is weak
don't say that you feel like dying
lifes hard and it feels like diamonds
going homes just far too gone
much too late to even feel like trying
cant understand what I'm saying
cant figure out what I'm implying
if you feel you don't wanna be alive
you feel just how I am
I'm on the dark side
and you cant come find him
how when its light all around you
yeah but its dark all inside him
no winner when its me against me
one of us aint gon survive
my heart been broke for a while
yours been the one keeping me alive
there's only two ways out of here
you're ain't late, you'll be trapped here forever
there's only two ways out of here
one's through the door
the other is through me
this world is such a fucked up place
my minds such a fucked up shape
everything down here sucks
maybe whats up there is great
we all gotta go one day
I just wanna cut to the chase
I wanna stop these nightmares
I just wanna touch your face
all you see is all my feats
all I see is all my flaws
all I hear is all my deamons
even through your applause
all you see is all my flights
well all I see is all my falls
all you see is all my rights
all I see is all my wrongs
Lord keep telling me to fight
gun on my table telling me to come on
telling me to put him inside my hand
then put it up right next to my dome
Lord keep telling me to find a reason
anything to keep me from squeezing
simplest things yeah you really like summer
you really like music, you really like reading
I cant win if its me against me
one of us aint gon survive
and my heart been broke for a while
yours been the one keeping me alive
yours been the one keeping me alive
yours been the one keeping me alive
there's only two ways out of here
if you're too late, you'll be trapped here forever
there's only two ways out of here
one's through the door
the other is through me
the other is through me