Old 03-15-2017, 08:05 PM #17
CurtisOliver's Avatar
Class 3R Laser
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 2,471
Rep Power: 12178
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
CurtisOliver CurtisOliver is online now
Class 3R Laser
CurtisOliver's Avatar
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 2,471
Rep Power: 12178
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
Default Re: How does a laser blind you?

Exactly Diachi. Yes, IR or even UV. IR doesn't fluoresce much and can be totally invisible to the naked eye. Whereas UV can cause fluorescence allowing its dot to become visible. The danger of high powered UV though is any UV glare can be potentially hazardous to unprotected eyes resulting in cataracts in severe cases.

And as for the photonic energy. Yes, the power is the same. Photonic energy only becomes important when we are talking about ionisation or phenomenon such as the photoelectric effect.


__________________
View my laser collection



Please make a post in our Member Collections Section. Where you can share your laser collection in one place for all of the forum to see.

Useful Links:
http://darekk.com/kalkulator/wavelength-to-rgb


Feel free to use this +rep icon.
Just right click and open image in new tab,
and then copy and paste the link into those IMG tags.

Last edited by CurtisOliver; 03-15-2017 at 08:06 PM.
CurtisOliver is online now   Reply With Quote










Old 03-15-2017, 08:20 PM #18
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,578
Rep Power: 12505
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,578
Rep Power: 12505
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: How does a laser blind you?

Quote:
Originally Posted by CurtisOliver View Post

And as for the photonic energy. Yes, the power is the same. Photonic energy only becomes important when we are talking about ionisation or phenomenon such as the photoelectric effect.
I forgot about the photoelectric effect. I remember we experimented with that way back in High School when we were doing our section on light/lasers.

Another one: Matters for things like fluorescence too.
__________________


445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit - Awaiting Arrival | >>LaserPointerStore Thread<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD.850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 03-15-2017, 08:22 PM #19
CurtisOliver's Avatar
Class 3R Laser
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 2,471
Rep Power: 12178
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
CurtisOliver CurtisOliver is online now
Class 3R Laser
CurtisOliver's Avatar
 
Join Date: Jun 2015
Location: Brentwood, England (Near London)
Posts: 2,471
Rep Power: 12178
CurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond reputeCurtisOliver has a reputation beyond repute
Default Re: How does a laser blind you?

Yep. My school never allowed experimentation with lasers. Maybe that's a reason why I'm so adamant now.
In order to test thing like ray diagrams, we have to use a ray box, not lasers.
__________________
View my laser collection



Please make a post in our Member Collections Section. Where you can share your laser collection in one place for all of the forum to see.

Useful Links:
http://darekk.com/kalkulator/wavelength-to-rgb


Feel free to use this +rep icon.
Just right click and open image in new tab,
and then copy and paste the link into those IMG tags.
CurtisOliver is online now   Reply With Quote
Old 03-15-2017, 08:23 PM #20
Radim's Avatar
Class 2M Laser
 
Join Date: Aug 2016
Location: European Union
Posts: 645
Rep Power: 7187
Radim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond repute
Radim Radim is online now
Class 2M Laser
Radim's Avatar
 
Join Date: Aug 2016
Location: European Union
Posts: 645
Rep Power: 7187
Radim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond reputeRadim has a reputation beyond repute
Default Re: How does a laser blind you?

Quote:
Originally Posted by diachi View Post
I forgot about the photoelectric effect. I remember we experimented with that way back in High School when we were doing our section on light/lasers.

Another one: Matters for things like fluorescence too.
BTW I have seen a video even using green laser to power red LED. Interesting...

Edit: Well it seems it was not the video but this pic:

__________________
"Lasers are s3xy."
"That feeling when you see colours as their wavelengths."
"Laserpainting is a drug. Do not try it."


Current collection:
405 nm | 500 mW | Wicked Lasers Lunar
445 nm | 3.5 W | Wicked Lasers Arctic
473 nm | 100 mW | Jet Lasers PL-E Pro (Review)
520 nm | 1 W | Wicked Lasers Krypton
532 nm | 100 mW | Wicked Lasers Evo
532 nm | 800 mW | Sky Lasers PL

589 nm | 50 mW | Dragon Lasers Spartan
635 nm | 750 mW | Wicked Lasers Inferno
1 W RGB projector
(+ some laser pointers)

Laserpainting artworks:
LPF thread: Radim's laser painting
Latest laserpainting: The Portal
Instagram: @radimmatera

Please use hashtag #laserpointerforums for laser related stuff when you post on social media to help us promote LPF. Thank you.

Last edited by Radim; 03-15-2017 at 08:34 PM.
Radim is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading












Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 05:53 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC