How Things Work: Ice Rinks
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- čas přidán 12. 05. 2019
- Visit to the University of Illinois’s Ice Arena. Shows what is under the ice and how the ice is made and layered including logos. The working of a Zamboni, the tool which re-surfaces the ice. How ice skates work and why they slide so well. The physics of why ice is slippery at least if it is not way too cold. Ice rink maintenance.
9:46 Intesting/Intriguing. (level ice, w. h. o. knew).
12:23 Interesting/Intriguing. (indeed flat).
dancing with axl rose.... lmao perfect ... priceless
9:46 Intesting/Intriguing. (level ice, w. h. o. knew).
12:23 Interesting/Intriguing. (indeed flat).
A very helpful video Prof! More illustrations would make it even better 👍
9:46 Intesting/Intriguing. (level ice, w. h. o. knew).
12:23 Interesting/Intriguing. (indeed flat).
I don't have any idea why you said that concrete has to be heated. He mentioned that he had to heat it to fix it after the insulation failed and they had permafrost with a 10 inch rise in the sections of the rink.
I don't think that this has been modernized first of all the labor costs are the primary cost and it's no longer beyond the ability of a robot to do. Secondly the labor is to save ostensibly energy that cost far far less. In downtown Los Angeles California I have seen them build the ice rink they bring lots of ice cubes in to get it started. I think they used trailer generators to operate the compressors I don't remember that's called Pershing Square and I think they have some heavy duty electrical connections to the grid there.
I don't think that the thickness of the ice represents huge energy cost and I don't think that the ice has to be perfectly level so I think the solution is colder ice and thicker ice but what you said about the gaps between the tallest molecules having loose molecules is helpful.
I also don't understand your argument about how you should slide through the ice it would take time and the existing layer of water would only reduce the time slightly I think what you're trying to say it would take longer than you have but you don't say what happens in their words when you try to skate on ice that is 21 degrees below Fahrenheit? I suppose you're going to have more difficulty turning maintaining traction. I also object to your use of the word dense when you meant less cubic space the problem with calling it more than or less than space to find how much space it is is the reactions that occur between the molecules reduce the mass. so ice is more space consuming than liquid water and it is less massive. It is less massive because the potential energy in water vapor that is released when it condenses exist as a mass as the temperature is not raised. this is an extremely controversial point and I don't know whether you agree with me or not nor am I certain about this but I have found a similar academic to yourself who argues that all reactions result in a change in mass. Mass is not conserved but there is always a balancing of the energy or temperature of the material and its mass. that is the case not for ordinary temperature changes but when did this enough Heat or the removal of heat does not change the temperature in the linear basis but is absorbed or lost by the phase change.
it's a very very tiny amount of mass for water it's more for liquid nitrogen and because there are so many forms of crystallized oxygen I assume there are as many Delta's in the mass change?
9:46 Intesting/Intriguing. (level ice, w. h. o. knew).
12:23 Interesting/Intriguing. (indeed flat).