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Rocket Science

Whilst playing with a bottle rocket with my niece and brother-in-law the other day we were trying to decide how much water to fill it with. We did not want it to go too high and disappear over a neighbors fence.

We could not have just put less pressure in the bottle before launching as [...]

RPM or RIP?

Is the humble washing machine sitting in your kitchen a potential Claymore waiting to explode?

Your average washing machine has a drum approx 40cm in diameter. This enables you to load about 6 kg of clothes in one go. During a spin cycle this drum spins on average from 1,000 to 1,600 RPM.

The reason [...]