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Archive for the ‘Physics’ Category

Why is the sky blue?

Supposed that you’re having a amiable picnic on a hilltop with your fellow friends and family and gazing through the vast land of sceneries, you look up to the sky and you started to wonder why is it blue and not black? Well, the answer is simple, when we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

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WormholeAs you can observe the picture above that shows the fabric of time is being bended like a piece of paper. This is mostly what’s a wormhole should look like and the concept that’s it is used. Wormholes is a hypothetical topological feature of spacetime that is fundamentally a ‘shortcut’ through space and time. Spacetime can be viewed as a 2D surface (to simplify understanding) that, when ‘folded’ over, allows the formation of a wormhole bridge. A wormhole has at least two mouths that are connected to a single throat or tube. If the wormhole is traversable, then matter can ‘travel’ from one mouth to the other by passing through the throat. While there is no observational evidence for wormholes, spacetimes containing wormholes are known to be valid solutions in general relativity.

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