The light color of the flashlight

4 posts / 0 new
Last post
xtarflashlight
xtarflashlight's picture
Offline
Last seen: 1 day 15 hours ago
Joined: 01/21/2013 - 21:25
Posts: 219
Location: Shenzhen
The light color of the flashlight

Besides white light, the most common colors for flashlights are red, green, blue, and UV light. Here let’s discuss the use of these different light colors.

Red light:

First, let’s talk about the red light most used by outdoor enthusiasts.

Compared with white light, human eyes are less sensitive to red light. Therefore, when you plan hiking or camping at night and do not want to affect your teammates, you can use red light. It is also good to be used in night sky watching.

On the other hand, red light is the color light with the longest wavelength and has strong penetrating power. It is especially useful in haze and rainy days. Red is generally regarded as a warning color (signal for attention), so the red light is very useful in calling for help in the wilderness.

Blue Light:

Although the blue light has a short wavelength, it has special functions. Under blue light, blood stains will have a fluorescent reaction, and oil stains will turn into a darker black. Therefore, hunting enthusiasts use blue light flashlights to track blood stains of injured prey, and industrial workers can also use it for equipment inspection.

Blue light is widely used in night fishing. First of all, the water surface under blue light is relatively soft. It is not easy to cause the reflected light to dazzle the eyes, which can reduce the disturbance of the fish. It can also make the fish float clearly visible. In addition, blue light will attrack some sport fish in saltwater.

Green light:

Green light is the most sensitive color for human eyes. Compared with blue light, red light, and UV light in the same lumens, green light feels the brightest. Therefore, when using low-brightness green light, the pupils will shrink slightly and become aimed. At this time, it is most accurate in watching something, so green light is very suitable for observing maps and fine documents.

UV light

It is generally used in professional fields such as anti-counterfeiting, tracking, and authentication. In addition, UV lights are also the best equipment for catching scorpions. There is a fluorescent substance in the exoskeleton of scorpions that can emit blue-green light when excited by ultraviolet light. Under the irradiation of ultraviolet light, the light they emit will become more obvious.

Of course, flashlights with rich colors can also be used for light painting photography, that is, photographic works that use light painting as a creative means. Any light source can be used as a part of the imaging effect.

==
What colors of lights does your flashlight have?

Souichirou
Souichirou's picture
Offline
Last seen: 2 days 11 hours ago
Joined: 04/05/2019 - 21:32
Posts: 695

In the collection ? pretty much everything listed. As my EDC neutral white.

lazerEagle
lazerEagle's picture
Offline
Last seen: 3 hours 33 min ago
Joined: 05/20/2020 - 21:11
Posts: 236
Location: Australia

My friend Roxanne puts on a red light. I keep telling her she doesn’t have to.

- the best way to predict the future is to create it -

BOO5TED
BOO5TED's picture
Offline
Last seen: 20 hours 23 min ago
Joined: 04/16/2019 - 20:53
Posts: 754
Location: ATL
lazerEagle wrote:
My friend Roxanne puts on a red light. I keep telling her she doesn’t have to.

Does she still wear that dress though? Looked so good on her…….

"America has three cities, New York, San Francisco and New Orleans. Everywhere else is Cleveland."- Tennessee Williams