If soldiers had to fight in the nightime, things got difficult because they could not see much. So, maybe someone would light a fire or switch on a torch and OOOPS! Bit of a giveaway. Night-vision goggles developed out of second world war technology and became the brilliantly useful bits of kit they are today
- Look! I can see my yacht!
- Look! There's an owl!
- Look! Watch out for that wild cat!
Course, somewhere in Dexter's bedroom is a pair of night-vision goggles. The trouble is, he cannot find them because of all the other high-tech toys he has lying around. If he could find them, he would have no trouble getting to the loo at night or spying on his tankful of exotic fish in the dark or even reading a book without the light on because night vision goggles take all the hassle out of darkness. The way they work is like this:
They boost up the light already around and collect it to focus on an image intensifier. This is amazing because then inside this intensifier the light particles get over-excited and bump into a sort of green TV screen and then give you an image.
BUT I hear you shout. What happens when I go caving or need to have a quick spy round a derelict warehouse where there is no light at all? The answer is get an infra-red illuminator as this will generate enough light to give you an image. During world war two when infrared sight was a baby, the army made an infrared sniper scope BUT it needed an infrared searchlight that was so big it had to be carried on a flatbed truck. Luckily things have got a lot smaller since then.
I have my doubts about using night-vision goggles during the day (see picture) because
a. It makes you look a bit mad e.g. like you might just have run away from having your eyes tested/you could just have had major brain surgery and should still actually be in hospital/ somebody is testing the latest scaffolding technique on your face. None of the above looks cool.
AND then there is
b. if you are doing a bit of spying it sort of gives the game away
On the plus side you do get to look like a human-robot-cyborg, so maybe it is not all bad.
Anyway, the greatest place in the universe is having a science of spying exhibtion until September. I am definitely off to get some tips.