What Is a Bending Pencil Experiment?
What is a bending pencil experiment? Why does a pencil during an experiment in water looks bent? The pencil appears to bend owing to refrac
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Refraction
What Is a Mirage?
Mirages are optical illusions produced by extraordinary atmospheric conditions. They can be non-existent sheets of water or similar visions,
How Far Can You See?
How far the human eye can see depends on how many particles of light, or photons, a distant object emits. The farthest object visible with t
Why Do Stars Blink or Twinkle?
Stars blink or twinkle when we observe them (from the surface of the earth) because we are viewing them through different layers of turbulen
When Can a Rainbow Be Seen?
When Can a Rainbow Be Seen? After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds w