Lasers - Wavelength (nm) Explained 

Thank you for the information. Very helpful But I have a question for you I need a laser that can project through 2x2 inches designed object and withing 3 feet or so It will project the design to be about 2x2 ft in day light ? Is this possible. I appreciate the help in advance thanks

3 question I got 650 nm.red laser 1 how dangerous is this laser ? 2 what's the visibility like ? 3 what kind of batteries do I need to purchase ?

Matthew Wise Me too! Thanks a lot😀

Who needs the technical terms!

cyancoyote lol

XM360 true tho

Physics teacher:nooooo, you must describe light with photons Me: haha squiglly line go brrrrrrr

Thanks a lot!

Thanks a lot!

Mos Def

for the miles thing, its supposed to be how long you can see the laser from, but its p much fucking useless, ignore those

Watt is a unit of energy and mW is 1/1000th a Watt. It is denoting power output typically of the beam itself and not it electrical requirements to power. Lasers rated in miles is a marketing term and not a standard you should ignore it for other ratings. To cut or burn with a beam you need to focus the beam to a single small point and concentrate the power output of the laser into a smaller surface area and all of this including collimation and divergence ratings are more about the optics then the laser itself. Divergence ratings at distance indicate how imperfectly collimated the beam is or how straight the light is traveling for the whole beam and how much spread or larger the dot will be at a specified distance. The atmosphere will scatter light traveling through it anyway here as that is why the full spectrum output of the sun looks blue when it is really blindingly white.

Bibek cherry

​@Ronnynerdy1watt will blind you 200mw can blind you

Yes

uphojhjjt

A vape

Rizzi Chhipa thanks for the response and the input.

i see something on video like that ..the wave if i Remember was created inside the diod,and was made by the distance,inside we have a perfect mirror and some half mirror,for me the distance betweeen this two create different wawe. i can't immagine more options Sorry I'm Just a random guy affascinated by laser and electricity

Green is best....

The 1064 is known as the gentle giant, it penetrates deeper in the skin whereas the 532 hits the epidermis causing the frosting

Things were only that way because the commercially available reds were weak, and then people figured out a way to cheaply manufacture powerful DPSS greens that were much stronger. But you can have lasers of any color and power (based on the available technology)

They are one of the most visible colors. The closer you get to 555nm, the more visible the laser will be!

For burning stuff blue is the best and Ir

@@XM360 Are there any sellers who have 555nm diode?

www.ebay.com/i/302330273266?chn=ps&dispItem=1&ul_ref=http%253A%252F%252Frover.ebay.com%252Frover%252F1%252F711-117182-37290-0%252F2%253Fmpre%253Dhttps%25253A%25252F%25252Fwww.ebay.com%25252Fi%25252F302330273266%25253Fchn%25253Dps%252526dispItem%25253D1%2526itemid%253D302330273266%2526targetid%253D323617871734%2526device%253Dm%2526adtype%253Dpla%2526googleloc%253D9018987%2526poi%253D%2526campaignid%253D852311515%2526adgroupid%253D46150848187%2526rlsatarget%253Dpla-323617871734%2526abcId%253D1128846%2526merchantid%253D115326420%2526gclid%253DCjwKCAjwk4vMBRAgEiwA4ftLs_hx2SjG4qnQQPDarVpXOuc0Cv97NiNPCTwNk5stNmFgkmyQC_mf4hoCA_sQAvD_BwE%2526srcrot%253D711-117182-37290-0%2526rvr_id%253D1274811072477

Kyren Me green, 532 (usually) is the most visible

That would be a infrared laser but it will give you cancer

Windows all of them but some give off UV light which can harm your eyes without you even knowing

The ones with wavelenght lower than 405 nm?

GeTR3kT depends on your wattage. If they are all the same wattage the lower the number is the stronger it is

no that would be Infrared and invisible to the human eye

Red

Thanks a lot!

OMG you just made my day you actually replied to me

Ya hopefully prices come down as the technology becomes easier to produce

We do have many things we would not be able to afford at all if that didn't happen. Part of it also happens as more people buy it and that helps offset the costs and make it nice and affordable when it should have cost a fortune to buy and even once did. 3D printers are a good example. There are some that cost as much as a good car and now there are *some* that can be bought for just a couple hundred dollars.

XM360 I'm thinking about the SPYDER III S3 ARCTIC, has the price gone down from $250? and I do think that WICKED LASERS does ship to the US now but it takes a few months.also could you please send me a price total for the ARCTIC, KRYPTON,and maybe a few other lasers that have the most visible beams for UV and red lightweight handheld laser pointers.really appreciate it.😀😉

XM360 I'm thinking about the SPYDER III S3 ARCTIC, has the price gone down from $250? and I do think that WICKED LASERS does ship to the US now but it takes a few months.also could you please send me a price total for the ARCTIC, KRYPTON,and maybe a few other lasers that have the most visible beams for UV and red lightweight handheld laser pointers.really appreciate it.😀😉

or the 520 NM, that seafoam green color.

Green goes the farthest but blue burns the strongest.