Shadows are made by blocking out light from the sun or a torch. Watch this video and try and make your own shadow puppets. Lucy: Hi! Let's use light to make shadow puppet monsters. We can make a ...

Opaque materials, like a brick or a toy, completely block light and create a shadow ... low in the morning or evening, shadows can be much longer and stretched out than in the middle of the ...

Related: Night sky guide, what you can see tonight A lunar eclipse is caused by Earth blocking sunlight from reaching the moon and creating a shadow across ... such as blue light are scattered ...

If you’ve ever suffered from dry, irritated eyes or struggled to fall asleep after a long day of staring at your computer, you may have been tempted to purchase a pair of blue-light-blocking ...