A demonstration of how a source of light is required to see objects in the dark. The presenter shines a torch around a dark room and sees shiny and white objects. The presenter also shows Boffin ...
A demonstration of how a source of light is required to see objects in the dark. The presenter shines a torch around a dark room and sees shiny and white objects. The presenter also shows Boffin ...
And getting up at 4am is difficult enough without having to fumble your way up or down a mountain in the dark! You could just use a normal hand torch, but having the light move to exactly where ...