What is a Stationary or Standing Wave?
A stationary or standing wave forms when water is pulled back against the flow by gravity. When water flows over an underwater ledge and then…
Tag: gravity
Learning about the Moon by Watching the Thames
An extraordinary guest article by John Pahl. I love looking at the night’s sky, following the movement of the Moon and stars across the sky.…
Phototropism and Gravitropism
There is a nice example of gravitropism and phototropism in action in this picture. Gravitropism – The orientation of a plant or other organism in…
The Chandler Circle
We have now passed the December solstice, the northern hemisphere days are getting longer, albeit very slowly. The solstices are key dates in the orbit…