Sunburn caused by water?
In the afternoon of one day in summer Petra waters her plants in the garden. While doing so, water drops are sprayed on the leaves. Now Petra recognises that some waterdrops produce bright light spots on the surface of the leaves.
Should Petra rather not water her plants about noon when it is awfully hot, to protect her plants from burnings caused by the drops?
Behind the buttons on the right side you can find tips for the solution. Chosse one of them! You can also use several hints succesively.
Helpful hints
On the window sill
What has happened to the plants?
What has happened to the plants?
Wine glass with water
With the help of a wine glass you can deflect light.
With the help of a wine glass you can deflect light.
Refracted rays of light
The deflection of light at boundaries of media.
The deflection of light at boundaries of media.
The shoemaker's ball
Glass globe instead of electric current.
Glass globe instead of electric current.
This may help you...
In the toolbox you can find important physical basics and useful facts.
In the toolbox you can find important physical basics and useful facts.
"I've got it!"...
...and I would like to answer the question.
...and I would like to answer the question.