QUE SIGNIFIE LASER EN ANGLAIS
Laser
Un laser est un dispositif qui émet de la lumière grâce à un processus d'amplification optique basé sur l'émission stimulée de rayonnement électromagnétique. Le terme «laser» est issu d'un acronyme pour «amplification de la lumière par émission stimulée de rayonnement». Un laser diffère d'autres sources de lumière car il émet de la lumière de manière cohérente. La cohérence spatiale permet à un laser d'être focalisé sur un point serré, ce qui permet des applications telles que la découpe au laser et la lithographie. La cohérence spatiale permet également à un faisceau laser de rester étroit sur de longues distances, permettant des applications telles que des pointeurs laser. Les lasers peuvent également avoir une cohérence temporelle élevée qui leur permet d'avoir un spectre très étroit, c'est-à-dire qu'ils n'émettent qu'une seule couleur de lumière. La cohérence temporelle peut être utilisée pour produire des impulsions de lumière - aussi courtes qu'une femtoseconde. Les lasers ont de nombreuses applications importantes. Ils sont utilisés dans des appareils de consommation courante tels que les lecteurs de disques optiques, les imprimantes laser et les scanners à code à barres. Ils sont utilisés en médecine pour la chirurgie au laser et divers traitements de la peau, et dans l'industrie pour la coupe et le soudage des matériaux. Ils sont utilisés dans les dispositifs militaires et d'application de la loi pour marquer les cibles et la portée et la vitesse de mesure.
définition de laser dans le dictionnaire anglais
La première définition du laser dans le dictionnaire est une source de rayonnement optique, infrarouge ou ultraviolet de haute intensité produite à la suite d'une émission stimulée maintenue dans un milieu solide, liquide ou gazeux. Les photons impliqués dans le processus d'émission ont tous la même énergie et la même phase de sorte que le faisceau laser est monochromatique et cohérent, ce qui lui permet d'être mis au point. Une autre définition de laser est une source similaire produisant un faisceau de n'importe quel rayonnement électromagnétique, tel qu'un rayonnement infrarouge ou micro-ondes. Le laser doit également utiliser un laser, en particulier dans le cadre d'un traitement médical.
CONJUGAISON EN ANGLAIS DU VERBE LASER
PRESENT
Present
I laser
you laser
he/she/it lasers
we laser
you laser
they laser
Present continuous
I am lasering
you are lasering
he/she/it is lasering
we are lasering
you are lasering
they are lasering
Present perfect
I have lasered
you have lasered
he/she/it has lasered
we have lasered
you have lasered
they have lasered
Present perfect continuous
I have been lasering
you have been lasering
he/she/it has been lasering
we have been lasering
you have been lasering
they have been lasering
PAST
Past
I lasered
you lasered
he/she/it lasered
we lasered
you lasered
they lasered
Past continuous
I was lasering
you were lasering
he/she/it was lasering
we were lasering
you were lasering
they were lasering
Past perfect
I had lasered
you had lasered
he/she/it had lasered
we had lasered
you had lasered
they had lasered
Past perfect continuous
I had been lasering
you had been lasering
he/she/it had been lasering
we had been lasering
you had been lasering
they had been lasering
FUTURE
Future
I will laser
you will laser
he/she/it will laser
we will laser
you will laser
they will laser
Future continuous
I will be lasering
you will be lasering
he/she/it will be lasering
we will be lasering
you will be lasering
they will be lasering
Future perfect
I will have lasered
you will have lasered
he/she/it will have lasered
we will have lasered
you will have lasered
they will have lasered
Future perfect continuous
I will have been lasering
you will have been lasering
he/she/it will have been lasering
we will have been lasering
you will have been lasering
they will have been lasering
CONDITIONAL
Conditional
I would laser
you would laser
he/she/it would laser
we would laser
you would laser
they would laser
Conditional continuous
I would be lasering
you would be lasering
he/she/it would be lasering
we would be lasering
you would be lasering
they would be lasering
Conditional perfect
I would have laser
you would have laser
he/she/it would have laser
we would have laser
you would have laser
they would have laser
Conditional perfect continuous
I would have been lasering
you would have been lasering
he/she/it would have been lasering
we would have been lasering
you would have been lasering
they would have been lasering
IMPERATIVE
Imperative
you laser
we let´s laser
you laser
NONFINITE VERB FORMS
Present Participle
lasering
MOTS EN ANGLAIS EN RAPPORT AVEC «LASER»
laser ·
sailboat ·
weapons ·
high ·
powered ·
what ·
does ·
stand ·
airlines ·
acronym ·
history ·
device ·
that ·
emits ·
light ·
through ·
process ·
optical ·
amplification ·
based ·
stimulated ·
emission ·
electromagnetic ·
radiation ·
term ·
originated ·
differs ·
from ·
howstuffworks ·
work ·
players ·
dental ·
drills ·
surgery ·
even ·
tattoo ·
removal ·
exactly ·
learn ·
about ·
various ·
types ·
wicked ·
blue ·
green ·
home ·
spyder ·
arctic ·
krypton ·
feel ·
energy ·
with ·
world ·
most ·
powerful ·
association ·
laser ·
class ·
worldwide ·
membership ·
services ·
regattas ·
results ·
international ·
laserinternational ·
includes ·
activities ·
information ·
addresses ·
links ·
sailing ·
sites ·
north ·
american ·
championship ·
regatta ·
hosted ·
alamitos ·
yacht ·
club ·
abyc ·
beach ·
june ·
institute ·
america ·
society ·
professional ·
safety ·
mission ·
foster ·
specialising ·
accessories ·
consumer ·
10 CITATIONS EN ANGLAIS AVEC «LASER»
Citations et phrases célèbres avec le mot
laser.
The main ingredient of the first quantum revolution, wave-particle duality, has led to inventions such as the transistor and the laser that are at the root of the information society.
I'm scattered, and then that last hundred pages, bam, I'm a laser.
I had six silly tattoos done when I was young and I bitterly regret them. I've thought about laser surgery, but that leaves a scar, so I'm just leaving them.
If you think about it, if you've ever been to a Catholic service, it's practically a laser light show. It's very dramatic, very theatrical. The outfits they wear, it's all designed to be impressive.
Well, I made an announcement to my family at 8 that I wanted to be an actor, and I focused like a laser beam on it. I never had a fallback plan.
We didn't even think about it, you know? I used to collect laser discs, and you'd have some college professor analyzing It's a Wonderful Life or Citizen Kane, and now it is pretty funny - the idea of commentary for a silly kid's movie, you know?
Shine like the day I set cosmic eyes on you, friend, by the light of the sweet squash in my lovely laser broom.
The atoms become like a moth, seeking out the region of higher laser intensity.
We have to make sure, at Apple, that we stay true to focus, laser focus - we know we can only do great things a few times, only on a few products.
There are relatively few experiments in atomic physics these days that don't involve the use of a laser.
10 LIVRES EN ANGLAIS EN RAPPORT AVEC «LASER»
Découvrez l'usage de
laser dans la sélection bibliographique suivante. Des livres en rapport avec
laser et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Laser Diagnostics for Combustion Temperature and Species
This book aims to make these powerful and important new tools in combustion research understandable.
An essential introduction to the principles of laser operation and design for graduates in physics and engineering.
William T. Silfvast,
2004
3
Laser: The Inventor, the Nobel Laureate, and the Thirty-Year ...
Gordon Gould, the courts ruled, had invented the laser. Laseris a grand story of technology and law. Nick Taylor has extensively interviewed Gould as well as other key participants in the battle over the laser's invention and patents.
4
Basics of
Laser Physics: For Students of Science and Engineering
This book offers a general description of the laser, theoretical and operational details of gas, solid state, free-electron and semiconductor lasers.
5
The History of the
Laser
This book traces the history of the laser, from the first theoretical predictions of stimulated emission made in the 1920s, through the experimental development of masers and lasers in the 50s and 60s, to the advanced applications of lasers ...
6
Beam : The Race to Make the
Laser: The Race to Make the
Laser
In 1954, Charles Townes invented the laser's microwave cousin, the maser.
7
Laser Welding: A Practical Guide
Enables the reader both to understand and to use, in a practical manner, laser welding.
8
Laser Cooling and Trapping
This text begins with a review of the relevant aspects of quantum mechanics; it then turns to the electromagnetic interactions involved in slowing and trapping atoms, in both magnetic and optical traps.
Harold J. Metcalf, Peter van der Straten,
1999
9
Laser Material Processing
New chapters on laser physics, drilling, micro- and nanomanufacturing and biomedical laser processing reflect the changes in the field since the last edition, updating and completing the range of practical knowledge about the processes ...
William Steen, Kenneth G. Watkins, Jyotirmoy Mazumder,
2010
10
Laser: Light of a Million Uses
Past, present, and future of tools with a host of functions, from providing superb fidelity on CDs to transforming surgery. "Fascinating. . . richly, readably thorough." ? Wall Street Journal.
Jeff Hecht, Dick Teresi,
1998
10 ACTUALITÉS CONTENANT LE TERME «LASER»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
laser est employé dans le contexte des actualités suivantes.
Hi-tech laser, microwave weapons on Indian Navy's wishlist
While laser weapons onboard warships would enable them to blast incoming targets like missiles and rockets at the speed of light, ... «Hindustan Times, juil 15»
Laser Masters' World Championships 2015 >> Scuttlebutt Sailing …
The 2015 Laser Masters' World Championships was held July 12-18 in Kingston, Ontario. With 138 sailors in Standard Rig and 109 sailors in ... «Scuttlebutt Sailing News, juil 15»
New laser device spells end for diabetic finger pricking | Zee News
London: A new technology developed by an Indian-origin scientist, which uses a laser device may be able to non-invasively monitor blood ... «Zee News, juil 15»
Laser sailing championships: Mohapatra, Deelip walk away with the …
Laser Standard: Race 11: 1. ... Final standings: Laser Standard: 1. ... AYN, Deelip Kumar Singh, EMESA, Laser Sailing championship. «The Hindu, juil 15»
Weber: Laba laser a rare bonus for the Whitecaps - The Province
Weber: Laba laser a rare bonus for the Whitecaps. Of how the play unfolded, he said: “I saw Kekuta (Manneh), I saw Nico (Mezquida), but I ... «The Province, juil 15»
Bladeless laser cataract removal surgery now available in EP - El …
Two weeks ago, Morris, a local bookkeeper, under went bladeless laser cataract removal surgery at El Paso Eye Surgeons. "Before the surgery ... «El Paso Times, juil 15»
Sharp as a Laser - The New Indian Express
One of the major inventions of the century, laser technology has been found to have a number of applications in various fields such as medicine ... «The New Indian Express, juil 15»
FAA investigating laser strikes targeting Pittsburgh airplanes | Local …
Two planes at Pittsburgh International Airport were victims of laser strikes Wednesday night, according to the Federal Aviation Administration. «WTAE Pittsburgh, juil 15»
Pilots report laser strikes happened near Kennywood Park | Local …
Two pilots reported their planes were being struck by lasers on the ground Wednesday. The FAA released Friday they both happened near ... «WTAE Pittsburgh, juil 15»
The Kremlin is talking about reviving Russia's laser tank-building …
The news outlet, owned and directed by the country's government, wrote at the end of May about the potential for a "laser tank," citing the US ... «Business Insider, juil 15»