Equipped To Survive Equipped To Survive® Presents
The Survival Forum
Where do you want to go on ETS?

Page 4 of 4 < 1 2 3 4
Topic Options
#142040 - 07/29/08 01:59 PM Re: Colored flashlight for tracking [Re: dweste]
Hacksaw
Unregistered


UV light is very hard on the eyes. Using it even briefly will cause a lot of eye strain and can cause permanent damage if used often enough. Best saved for very brief and very occational bursts.

Top
#142060 - 07/29/08 03:35 PM Re: Colored flashlight for tracking [Re: ]
Hacksaw
Unregistered


Blue is close to UV on the spectrum. Many blue LEDs also put out a fair bit of UV.

I've tested my 10 color LED light on the blue setting with urine and it glows pretty good as long as it's dark out. If I ever need to track somebody through my bathroom who has a bladder control problem, I'm set! smile

Top
#142063 - 07/29/08 03:38 PM Re: Colored flashlight for tracking [Re: ]
dweste Offline
Pooh-Bah

Registered: 02/16/08
Posts: 2463
Loc: Central California
Originally Posted By: Hacksaw
Many blue LEDs also put out a fair bit of UV.
smile


Well, there is tonight's experiment!

Top
#142326 - 07/31/08 04:02 AM Re: Colored flashlight for tracking [Re: dweste]
dweste Offline
Pooh-Bah

Registered: 02/16/08
Posts: 2463
Loc: Central California
Arthur from The Sacramento Tracking and Wilderness Training Group pointed out the many animals,including deer, can see UV. He pointed us to this site which explains most clothing uses UV brighteners that make us stand out to animals:

http://www.atsko.com/articles/hunting/how-game-animals-see-smell.html




Top
#142340 - 07/31/08 12:29 PM Re: Colored flashlight for tracking [Re: dweste]
OldBaldGuy Offline
Geezer

Registered: 09/30/01
Posts: 5695
Loc: Former AFB in CA, recouping fr...
"...the deer has only blue peaking and green peaking receptors while the human has a third receptor..."

I have always wondered, how do they "know" that the receptors in a deers eyes work the way that the ones in human eyes work? They may be right, but to me it is just another SWAG. After all, they can't ask the deer...
_________________________
OBG

Top
#142379 - 07/31/08 05:02 PM Re: Colored flashlight for tracking [Re: OldBaldGuy]
dweste Offline
Pooh-Bah

Registered: 02/16/08
Posts: 2463
Loc: Central California
Pay no attention to the electrodes in your head, deer.

Top
#146368 - 08/28/08 05:29 PM Re: Colored flashlight for tracking [Re: dweste]
dweste Offline
Pooh-Bah

Registered: 02/16/08
Posts: 2463
Loc: Central California
Well, after several non-scientific experiments my conclusion is that colored light can aid in nighttime / dim light tracking. For me a red and green combo was easiest on the eyes and tracks were readily seen shadow-defined shapes. Using white light destroyed night vision, and using red only was not as easy on my eyes or as effective.

I hope to try UV soon.

Top
Page 4 of 4 < 1 2 3 4



Moderator:  MartinFocazio, Tyber 
January
Su M Tu W Th F Sa
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
Who's Online
2 registered (Rusty, Jeanette_Isabelle), 194 Guests and 3 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
Kreese, Nova, jackmiller, DaveL, Dale
5269 Registered Users
Newest Posts
Home prep for renting a room out in the sticks
by hikermor
03:18 AM
The urban '10 essentials'
by Byrd_Huntr
12:57 AM
Extreme cold/ Winter storm preps
by hikermor
12:38 AM
How Natives survived winter without today’s tech
by Phaedrus
08:17 PM
Which kills the most - heat or cold?
by Tjin
01/15/19 07:59 AM
Bugout Practice
by Jeanette_Isabelle
01/14/19 02:51 AM
Canned meat
by chaosmagnet
01/13/19 10:49 PM
UK Brexit
by adam2
01/12/19 04:59 AM
Newest Images
Tiny knife / wrench
Handmade knives
2"x2" Glass Signal Mirror, Retroreflective Mesh
Trade School Tool Kit
My Pocket Kit
Glossary
Test

WARNING & DISCLAIMER: SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please review the full WARNING & DISCLAIMER about information on this site.