## Search found 6 matches

Thu Jan 28, 2016 8:01 am UTC
Forum: What If?
Topic: What-If 0143: "Europa Water Siphon"
Replies: 53
Views: 35952

### Re: What-If 0143: "Europa Water Siphon"

It doesn't matter how deep underwater the ends of the tube are... the maximum that the water will go up the pipe is [air pressure at surface / (density of water * gravity)]. Plus a very amount for capillary action. If the pipe goes up any further than that, it doesn't matter what's going on at the ...
Wed Jan 27, 2016 4:49 pm UTC
Forum: What If?
Topic: What-If 0143: "Europa Water Siphon"
Replies: 53
Views: 35952

### Re: What-If 0143: "Europa Water Siphon"

There are certainly ways to transport water more than 34 feet upward. Siphoning just isn't one of them. But the problem has trees solved is directly applicable to siphoning. If we just do like the trees, then they are living proof that you can siphon water over a 100 meter tall top point. It is jus...
Wed Jan 27, 2016 6:25 am UTC
Forum: What If?
Topic: What-If 0143: "Europa Water Siphon"
Replies: 53
Views: 35952

### Re: What-If 0143: "Europa Water Siphon"

There are certainly ways to transport water more than 34 feet upward. Siphoning just isn't one of them. But the problem has trees solved is directly applicable to siphoning. If we just do like the trees, then they are living proof that you can siphon water over a 100 meter tall top point. It is jus...
Wed Jan 27, 2016 6:13 am UTC
Forum: What If?
Topic: What-If 0143: "Europa Water Siphon"
Replies: 53
Views: 35952

### Re: What-If 0143: "Europa Water Siphon"

But you can siphon water past the 34 feet barrier. Just ask any 35 feet-or-taller tree. Technically, they aren't really siphoning, but they are pulling water way further up than 34 feet (almost 400 feet in the case of the tallest redwoods).
Fri Jan 23, 2015 9:42 am UTC
Forum: What If?
Topic: What-If 0126: "Stairs"
Replies: 67
Views: 25886

### Re: What-If 0126: "Stairs"

Usually, Randall Munroe is good at using SI units, but this time he failed with the butter (a stick of four fluid ounces isn't standard in my part of the world). So here's a conversion for you all: daily dietary allowance of 2000 calories: 3 sticks = 323 grams
Tue Nov 12, 2013 12:12 pm UTC
Forum: What If?
Topic: What-If 0071: "Stirring Tea"
Replies: 71
Views: 40340

### Re: What-If 0071: "Stirring Tea"

At physics.stackexchange there is a question regarding this (slightly altered, though; it asks if sirring actually hastens cooling or dampens it). I cannot post a link (probably my post count), but it's question number 5265, with the title "Cooling a cup of coffee with help of a spoon". Go...