TheMagician0's comments

TheMagician0 | 9 years ago | on: Hyperloop One Will Be Underwater, Underground, Across the World

Since the current hyperloop concept can only travel in a straight line, perhaps having it as underwater structure will make possible for traveling at great distances. Otherwise, one can imagine having their pathways interfering with buildings, etc. when built above ground. Still, it will be very cool if a proof of concept can be [demonstrated](http://www.metaculus.com/questions/71/will-a-successful-proo...).

TheMagician0 | 9 years ago | on: Autonomous Plant Watering

"I really don’t understand the physics that makes that system work, but it has a lot to do with water pressure..."

For those who are curious: In simple terms, pressure is proportional to depth. Assuming the air pump is outputting constant pressure, the pressure exerting on the top surface of the water would be constant. On the other hand, the amount of pressure experienced at a point near the bottom of the container depends on the its depth- the deeper the more pressure.

When there is more fluid, there is more pressure near the bottom due to the weight of the fluid itself, which allows greater output (water going into the soil). As the fluid's depth decreases, so will the pressure experienced by a point near the bottom.

TheMagician0 | 9 years ago | on: Boys who live with books ‘earn more as adults’

I too wonder about this. Having read from physical books most of my life and switching to ebooks/PDFs (reading from laptop or iPad) was not as fun/convenient as I thought it would be. Although saving resources, the feeling I get when holding a book and writing in it (jogging down thoughts or deriving equations) are irreplaceable by electronic files.
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