Explores the principles of light, reflection, and magnification through hands-on experiments. Children observe how a magnifying glass focuses sunlight to create heat, examine the effects of light on ...
IN the coloured photographs from Egypt, printed in The Illustrated London News on February 25, one picture has white clouds and blue sky with their reflection in still water. The image has the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results