Panda Yangyang is a curious child
He always likes to ask all kinds of questions:
Why are the leaves green?
Why is the sky blue?
Why does the apple fall?
Why can leaves float in the sky?
Taking a time machine, Yangyang followed the panda father back in time.
"What we are about to go to is Italy in 1589"
"What we are about to go to is Trinity College, Cambridge University in 1661"
"First of all, we are going to Paris in 1891"
"Next, we are going to the Netherlands in 1593"
...
Scientists Newton, Galileo, Lavoisier and Madame Curie communicated face-to-face with Yangyang.
Free fall, gravity, prism, microscope...
The answer to the question requires you and Yangyang to explore together.
Concept: Science is everywhere in life, take a time machine and explore it with Yangyang