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laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow (https://www.aps.org/publications/apsnews/200312/history.cfm).
A laser differs from other sources of light in that it emits light which is coherent. 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 and lidar. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum. Alternatively, temporal coherence can be used to produce ultrashort pulses of light with a broad spectrum but durations as short as a femtosecond.
Lasers are used in optical disc drives, laser printers, barcode scanners, DNA sequencing instruments, fiber-optic, semiconducting chip manufacturing (photolithography), 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 in laser lighting displays for entertainment. Semiconductor lasers in the blue to near-UV have also been used in place of light-emitting diodes (LEDs) to excite fluorescence as a white light source. This permits a much smaller emitting area due to the much greater radiance of a laser and avoids the droop suffered by LEDs; such devices are already used in some car headlamps.
Hi. I am going to buy a cross laser level. I have one that you hold on the wall but is a bit restricting. To be perfectly honest I probably will use it around once a year. I got the option of buying a good second hand Bosch PCL-10 or I can go for the Bosch Pro GLL 2-15 but new.
I know the GLL...
Hi all
Looking at the bosch gtl 3 level, mainly for floor use, anyone got one, are they any good, looking for one that has a better laser than my current which is the £100 stanley virtual and horizontal lines.
Are have any suggestions of similar price point alternative. It's @toolstation for £160.
I have a sigma 3c2 and sick and tired of lining up for cuts and being out by 1-2 mm, has any one seen a laser that i can attach or any ideas how to diy it
I seem to be getting more large kitchen floors that run into hallways & as I mostly work on my own can take a while to set out with chalk line etc. So I would like to know if any of you guys use a floor laser to help set out and if so, which one?
My laser level has decided to die...so now I am in the market for a replacement.
What is out there now these days. My budget is irrelevant as I will always buy quality items that will last.
Cheers peoples !
Afternoon All.
Out of interest has anybody noticed there much difference in the visibility between green and red laser liners.
Green is marketed as more visual.
Cheers.
Kevin
hi guys,
lm looking into getting a new laser level, lve been looking at the DW 089 and the new dewalt 5 dot, hilti pm range, and lts mindboggling lm undecided, lm leaning towards the 089 as it has a square function on it.
just wondering what you guys are using and some feedback on actual site...
Hi all another post...
planning on doing a couple of bathrooms with plenty of tiling and would like to ask which type of laser levels one would consider using which will do most things you would require for tiling.
rgds,
Kelvin....
Hey guys,
Need some advice from everyone out there. Just looking at getting a new laser level. I've tried the Bosch GLL3 80P which is brilliant but just found the DW089 K which claims to do the same job as the Bosch? I've heard on the grapevine the Dewalt is prone to breakages? Just want to get...
Always used the traditional level sets. but just before xmas I was subcontracting to a building firm.. the foreman was running in lines for the downlights to be put in through the ceiling with his laser level and pole..
all singing dancing things.. self leveling off a pole which when I stuck...
Just treated myself to a new Rubi laser L4, never been a fan of lasers in general, but this is the nuts, saves so much time, vertical lines, horizontal on 3 walls... nice bit of kit £230.00 money well spent.. magnetic or screwed to wall with pendulum.. haven't used the red glasses you get with...
m3fitter
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