| 释义 |
Definition of laser in English: lasernoun ˈleɪzəˈleɪzər A device that generates an intense beam of coherent monochromatic light (or other electromagnetic radiation) by stimulated emission of photons from excited atoms or molecules. Lasers are used in drilling and cutting, alignment and guidance, and in surgery; the optical properties are exploited in holography, reading barcodes, and in recording and playing compact discs. Example sentencesExamples - A few were beaming their lasers at him, changing him until he could no longer walk or move.
- This lattice can trap the neutral atoms in potential wells because the electric fields of the lasers induce a dipole moment in the atom.
- Other possibilities include the use of lasers and strobe lights which temporarily blind or confuse a suspect.
- Powered by infrared lasers, the shiny surface reflects and focuses this laser beam into a ring.
- However, an increasing number of archaeologists are adopting lasers as efficient measuring devices.
- It has led to computers, lasers and nuclear reactors, and it tells us why the Sun shines and why the ground beneath our feet is solid.
- The final piece is shown in a light box, with holes created by lasers letting light shine through layers of coloured plastics.
- The coating absorbs some of the laser's light, a percentage of which is made into a photocurrent.
- The lasers talk to the computer, which moves a blocking device to intercept the puck.
- Microsurgery and keyhole surgery are common place now - as is the use of lasers in surgery.
- I looked at the base and saw stands with lasers on them and the oversized slugs with beam cannons.
- A laser is a beam of light radiation, which delivers intense energy to a specific area of skin.
- I had to look at the red light of the laser and it was like being on hallucinogenic drugs.
- Yet it was not so long ago that lasers were deemed a solution in search of a problem.
- This spurred him to work on lasers, a necessary piece of equipment for his measurement.
- When lasers and optical fibres came together they revolutionised communications.
- The structure has potential for the development of active optical devices such as lasers and passive components.
- This pattern creates a hologram that you can see by illuminating the plate with a laser.
- It is this property that lies behind the technological device of the laser.
- It passes through the beam splitter the way it came, and goes straight back into the laser.
verbˈleɪzəˈleɪzər [with object]Treat or remove (something) using a laser, especially as part of a surgical procedure. she had her eyes lasered so she could ditch her glasses he has had tattoos lasered off his chest Example sentencesExamples - The surgery involves lifting a small flap of corneal tissue and lasering onto the deeper cornea beneath.
- Every few years, my test results would require freezing, or burning, or lasering mutating pre-cancerous cells away.
- Has lasering the lines from his face really improved him?
- What is the recovery time after having a tattoo lasered off?
- While he was lasering, he remarked the patient had started bleeding.
- I fully intend to have my face lasered soon.
- If you feel like getting hair lasered off, this is the place for you.
- It was a small matter of lasering away the areas of bad cells that had been pinpointed.
- Having your eyes lasered "is just like any surgery, and that means there will be risks".
- This isn't a tattoo you can have lasered off.
Origin 1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser. radar from [M20]: This system for detecting objects by sending out radio waves which are reflected back was developed in the 1930s. The name comes from the opening letters of radio detection and ranging, and was coined in 1941. Police started using radar traps to detect speeding motorists in the early 1960s. In the Second World War the myth that pilots ate lots of carrots to help them see in the dark was spread to explain how they could detect enemy planes, as radar was still a secret. Other words have been coined on the pattern of radar, such as lidar (mid 20th century), which works like radar, but uses light from lasers (mid 20th century)—laser itself being an acronym from ‘light amplification by the stimulated emission of radiation’.
Rhymes appraiser, blazer, eraser, Fraser, gazer, glazer, grazer, mazer, praiser, razor, salmanazar, taser, Weser Definition of laser in US English: lasernounˈlāzərˈleɪzər A device that generates an intense beam of coherent monochromatic light (or other electromagnetic radiation) by stimulated emission of photons from excited atoms or molecules. Lasers are used in drilling and cutting, alignment and guidance, and in surgery; the optical properties are exploited in holography, reading bar codes, and in recording and playing compact discs. Example sentencesExamples - A few were beaming their lasers at him, changing him until he could no longer walk or move.
- This lattice can trap the neutral atoms in potential wells because the electric fields of the lasers induce a dipole moment in the atom.
- A laser is a beam of light radiation, which delivers intense energy to a specific area of skin.
- Yet it was not so long ago that lasers were deemed a solution in search of a problem.
- The lasers talk to the computer, which moves a blocking device to intercept the puck.
- This spurred him to work on lasers, a necessary piece of equipment for his measurement.
- It is this property that lies behind the technological device of the laser.
- The coating absorbs some of the laser's light, a percentage of which is made into a photocurrent.
- Powered by infrared lasers, the shiny surface reflects and focuses this laser beam into a ring.
- However, an increasing number of archaeologists are adopting lasers as efficient measuring devices.
- Other possibilities include the use of lasers and strobe lights which temporarily blind or confuse a suspect.
- Microsurgery and keyhole surgery are common place now - as is the use of lasers in surgery.
- It passes through the beam splitter the way it came, and goes straight back into the laser.
- It has led to computers, lasers and nuclear reactors, and it tells us why the Sun shines and why the ground beneath our feet is solid.
- I looked at the base and saw stands with lasers on them and the oversized slugs with beam cannons.
- The final piece is shown in a light box, with holes created by lasers letting light shine through layers of coloured plastics.
- The structure has potential for the development of active optical devices such as lasers and passive components.
- This pattern creates a hologram that you can see by illuminating the plate with a laser.
- When lasers and optical fibres came together they revolutionised communications.
- I had to look at the red light of the laser and it was like being on hallucinogenic drugs.
verbˈlāzərˈleɪzər [with object]Treat or remove (something) using a laser, especially as part of surgery. he has had tattoos lasered off his chest I've got to get my eyes lasered again Example sentencesExamples - If you feel like getting hair lasered off, this is the place for you.
- It was a small matter of lasering away the areas of bad cells that had been pinpointed.
- What is the recovery time after having a tattoo lasered off?
- This isn't a tattoo you can have lasered off.
- The surgery involves lifting a small flap of corneal tissue and lasering onto the deeper cornea beneath.
- I fully intend to have my face lasered soon.
- Has lasering the lines from his face really improved him?
- Having your eyes lasered "is just like any surgery, and that means there will be risks".
- Every few years, my test results would require freezing, or burning, or lasering mutating pre-cancerous cells away.
- While he was lasering, he remarked the patient had started bleeding.
Origin 1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser. |