What did Galen conclude after his observations?

Most of the alpha -particles passed through the foil undeviated . What can be concluded from this observation ?

Most of the alpha -particles passed through the foil undeviated . What can be concluded from this observation ?

What would you conclude from the observation that cathode rays rotate a light paddle wheel placed in their path ?

When you bring water to boil, you see tiny bubbles inside the vessel. What you conclude by this observation?

What can be concluded from this?