Live data from Hacker News

Biologically extending human vision into the near-infrared: Initial success

experiment.com

11–20 of 61 posts

Re: Biologically extending human vision into the near-infrared: Initial success

#12
post #5

What an interesting experiment. Could there be some basis, after all, to the urban legend that eating carrots improves night vision? Carotenes are "partly metabolized into Vitamin A" [1], but this experiment is skipping the precursors and going straight for what I assume are large and exclusive doses of Vitamin A. Can it really be that no one has tried this before? Related and probably equally silly idea: I've always…

Night vision uses the photoelectric effect to translate a few photons from the lens into a picture you can see. It doesn't change the frequency of incoming light - it absorbs it and transmits an electron. Basically you are carrying around something similar to an old style tv on your head.

Re: Biologically extending human vision into the near-infrared: Initial success

#14
post #13

I seem to recall an article from some years back about someone using welding goggles with multiple layers of a specific blue filter on a very bright day and being able to see near-IR.. or something darn close to it.

I think you're thinking of this: http://amasci.com/amateur/irgoggl.html

It did take a bit for me to dig it up... I actually ended up having to use Google image search because I remember the guy talking about how trees looked. Without that I got a series of short uninteresting breathless YouTube videos on the topic and a whole bunch of contentless reblogging of said video that drowned out the original article.

Re: Biologically extending human vision into the near-infrared: Initial success

#15
post #7
post #5

What an interesting experiment. Could there be some basis, after all, to the urban legend that eating carrots improves night vision? Carotenes are "partly metabolized into Vitamin A" [1], but this experiment is skipping the precursors and going straight for what I assume are large and exclusive doses of Vitamin A. Can it really be that no one has tried this before? Related and probably equally silly idea: I've always…

The urban legend was mostly due to its use in WWII, to explain why the allied night fighters were so good. The fighters actually used radar, which was still top secret.

Source?

Re: Biologically extending human vision into the near-infrared: Initial success

#16
post #7

Earlier quoted context omitted.

The urban legend was mostly due to its use in WWII, to explain why the allied night fighters were so good. The fighters actually used radar, which was still top secret.

Source?

"Much publicity has been given to the good effects of carrots on night vision and some newspapers have even begun to use the vegetable as a nickname for certain ace pilots. Actually, night-fighter pilots don't eat anymore carrots than day fighters do..." —LIFE June 23, 1941

(Not quite the same, but in a similar vein)

Re: Biologically extending human vision into the near-infrared: Initial success

#17
post #5

What an interesting experiment. Could there be some basis, after all, to the urban legend that eating carrots improves night vision? Carotenes are "partly metabolized into Vitamin A" [1], but this experiment is skipping the precursors and going straight for what I assume are large and exclusive doses of Vitamin A. Can it really be that no one has tried this before? Related and probably equally silly idea: I've always…

The Japanese by contrast never developed truly effective airborne radar during WW2, so actually did select the pilots with the best night vision to fly their night fighters.

Re: Biologically extending human vision into the near-infrared: Initial success

#18

Earlier quoted context omitted.

Source?

"Much publicity has been given to the good effects of carrots on night vision and some newspapers have even begun to use the vegetable as a nickname for certain ace pilots. Actually, night-fighter pilots don't eat anymore carrots than day fighters do..." —LIFE June 23, 1941 (Not quite the same, but in a similar vein)

Thanks. Snopes has this:

http://www.snopes.com/food/ingredient/carrots.asp

"While carrots are a good source of vitamin A (which is important for healthy eyesight, skin, growth, and resisting infection), eating them won't improve vision. The purported link between carrots and markedly acute vision is a matter of lore, not of science. And it's lore of the deliberately manufactured type.

"In World War II, Britain's air ministry spread the word that a diet of these vegetables helped pilots see Nazi bombers attacking at night. That was a lie intended to cover the real matter of what was underpinning the Royal Air Force's successes: Airborne Interception Radar, also known as AI. The secret new system pinpointed some enemy bombers before they reached the English Channel.

"British Intelligence didn't want the Germans to find out about the superior new technology helping protect the nation, so they created a rumor to afford a somewhat plausible-sounding explanation for the sudden increase in bombers being shot down. News stories began appearing in the British press about extraordinary personnel manning the defenses, including Flight Lieutenant John Cunningham, an RAF pilot dubbed "Cats Eyes" on the basis of his exceptional night vision that allowed him to spot his prey in the dark. Cunningham's abilities were chalked up to his love of carrots. Further stories claimed RAF pilots were being fed goodly amounts of this root vegetable to foster similar abilities in them...."

That's an interesting form of disinformation. I've been known to employ somewhat similar tactics myself.

Re: Biologically extending human vision into the near-infrared: Initial success

#19
post #5

What an interesting experiment. Could there be some basis, after all, to the urban legend that eating carrots improves night vision? Carotenes are "partly metabolized into Vitamin A" [1], but this experiment is skipping the precursors and going straight for what I assume are large and exclusive doses of Vitamin A. Can it really be that no one has tried this before? Related and probably equally silly idea: I've always…

AFAIK vitamin A is poisonous in larger doses. In Finland they were worried at time that people might be getting to much of vitamin A. http://en.m.wikipedia.org/wiki/Hypervitaminosis_A
Post reply on HN