Physics A–Z: I
| Topic |
|---|
| If photons have no mass, how can they have momentum? Discover how photons, despite having no mass, can still carry momentum and affect the world around us., |
| If you view the Earth from far enough away can you observe its past? Imagine seeing Earth as it was thousands of years ago — is this possible if you look far enough into space? |
| Is nuclear fusion power really close to becoming a reality? Could the energy of the sun be harnessed on Earth in our lifetime? Discover what's holding fusion power back — and why it might finally work soon. |
| Is temperature a Lorentz invariant in relativity? Temperature may seem simple, but relativity adds a twist—does it stay the same for all observers?, |
| Is time continuous or discrete? Does time flow smoothly like a river, or does it tick like a clock? Explore the debate between continuous and discrete time. |
| Is time not absolute? Discover how time might not be the same for everyone, depending on where you are or how fast you're moving. |