Three Questions I’d like answered.

1. Why is there more than 1 electron?
2. How much does the universe weigh?
3. What’s the speed of gravity?


About Patrick Whittaker

I'm a writer and director of the occasional short film. Although a Londoner, I'm based in Blackpool on the north east coast of England.

Posted on February 19, 2014, in Uncategorized and tagged , , , , . Bookmark the permalink. 1 Comment.

  1. I’m very surprised that no one has answered this for you yet; I’m not a physicist, I’m an applied mathematician so don’t take my word for all of this:

    1: An electron has a charge of -1, which counteracts the proton (charge +1). If there was just one electron per atom, then there would only be hydrogen (which has a single proton and electron). When there are fewer electrons than protons in an atom, it becomes a positively charged ion (once again, I’m not a chemist, so don’t quote me on this) these particles cause acidity and are very corrosive. In conclusion, if there was only one electron, we simply wouldn’t exist.

    2: The universe doesn’t actually weigh anything, since weight is a measure of force. The mass of the universe is vast, doing some very simplified calculations, the figure is 10^53 kilograms, 100000000000000000000000000000000000000000000000000000 kg (that’s pretty massive). And that’s probably an underestimate, it has been shown that there isn’t enough mass in the centre of many galaxies to sustain their hold on outlying stars by gravity alone. That’s why people theorise about dark matter.

    3: Gravity is not a speed, it is an acceleration. And when an acceleration affects a mass, it becomes a force (Newton’s second law: F=ma). On Earth, the acceleration due to gravity is 9.81 metres per second squared. In Einstein’s theory of general relativity, the acceleration we feel is because of the curvature of space-time, which is in turn affected by the mass of an object. We are all eternally falling through the geodesic of Einstein’s space-time continuum.

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