全部标签

Series : Great Scientific Theories

Gravity

4-6 ┊ 3055 words ┊ ◄)) 4-6, 3055 words, 24 minutes audio time. Why does the rain fall? Why do rivers flow to the sea? The scientific theory of gravity answers these and many more questions we may have…
Lib-html
- 105
- 0
readadmin8818年8月13日
The Sun and Our Solar System

4-6 ┊ 3229 words ┊ ◄)) 4-6, 3229 words, 27 minutes audio time. How do we know that the Sun is at the center of our solar system? This scientific theory is know as heliocentrism. This fascinating book …
Lib-html
- 42
- 0
readadmin8818年8月13日
Electricity

4-6 ┊ 3440 words ┊ ◄)) 4-6, 3440 words, 28 minutes audio time. Who first discovered static and why was this important? What is an LED? This fascinating book looks at the historical controversies that …
Lib-html
- 53
- 0
readadmin8818年8月14日
Light

4-6 ┊ 3277 words ┊ ◄)) 4-6, 3277 words, 27 minutes audio time. How did ancient people manage to find light sources? How do we know about light-based theories such as prisms? This fascinating book look…
Lib-html
- 75
- 0
readadmin8818年8月14日