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lets pretend your in a forest on a sunny summers day. the sun beams through the trees. is there a name for that effect where the sun shines through something, and leaves a sort of shadow hanging in...
I seen a programme that said that gravity is a weak force compared to nuclear and electromagnetic forces.If this is true how come black holes stop light from escaping. That is of course if black holes...
Seeing as all 3 primary colors of laser pointers are now available. what would happen if i had a red, blue and green pointer and crossed all the beams? would the spot in the middle be white. similarly...
Hi All, There's a question in news regarding actual proof of certain things/events. I'm not too worried about the in's and out's of the questions but I am interested on one aspect. Is there a way of...
What is the role of the World Health Organisation (WHO) in controlling the spread of disease e.g. epidemiology, vaccination programmes, improving health education?
It has always irritated me that the sun's rays travel ca. 90 million miles but are prevented from giving their full effect to the earth by a comparatively thin layer of cloud. What happens to this...
I drive moderately so could eaily get up to 62 mpg** in my former 1.9 diesel Skoda. But the engine may consume more fuel on lengthier journeys compared with identical faster ones. I doubt there is any...
I have been tracking the spacestation in the UK for weeks on the orbital tracking.Had some fantastic sightings but at the moment there are no sightings as it goes over in the day and in the southern...