Hollow ground skate do have sharp edges, but that is not why they slide well. As a counter example speed skaters use flat ground skates and they slide awfully well. Ice is slippery because is has a molecularly thin layer of liquid water on top that acts as a lubricant. High pressure is not needed.
hes not entirely correct about the way skates glide on ice. hes not taking into account the actual shape of the bottom of a sharpened skate blade. the edges are sharp and cut into the ice, melted ice (water) IS created in the middle portion of the blade between the edges and this IS what is glided on. this water contributes to the natural fluid layer. thinner layer is better, shallower hollows glide faster not only because they dig in less but allow for a thinner wider layer.
I liked this... Even though you teach at u of m. Thank you!
russe197 3 weeks ago
wow... I really enjoyed this video. All of them are just common sense to hockey players but very interesting.
TheFanofFPS 6 months ago
hey prof. can you do a video on the role of translational and rotational forces on the brain that leads to concussions?
v8americanpower1 7 months ago
/watch?v=z_XvBnZKR50
slowershutter 1 year ago
Hollow ground skate do have sharp edges, but that is not why they slide well. As a counter example speed skaters use flat ground skates and they slide awfully well. Ice is slippery because is has a molecularly thin layer of liquid water on top that acts as a lubricant. High pressure is not needed.
johndoe960 1 year ago
Fun video.
pepperrgirl 1 year ago
Great Video! Go Blue!
moebob3 1 year ago
hes not entirely correct about the way skates glide on ice. hes not taking into account the actual shape of the bottom of a sharpened skate blade. the edges are sharp and cut into the ice, melted ice (water) IS created in the middle portion of the blade between the edges and this IS what is glided on. this water contributes to the natural fluid layer. thinner layer is better, shallower hollows glide faster not only because they dig in less but allow for a thinner wider layer.
tmkc3rd 1 year ago
@tmkc3rd If that was the case, then speed skaters (who's blades are completely flat) would not be able to generate as much speed as hockey players.
TheJwaffle 1 year ago
Very cool video! I'll be at the big chill... however, I will be saying "Go Green!"
kcjacoby 1 year ago