what we’re doing is experimenting with a very complex scientific phenomenon now
very complex scientific phenomenon now
very complex scientific phenomenon now skimming stones may be one of the most
skimming stones may be one of the most
skimming stones may be one of the most relaxing and satisfying pastimes known
relaxing and satisfying pastimes known
relaxing and satisfying pastimes known to man but it’s also fascinatingly
to man but it’s also fascinatingly
to man but it’s also fascinatingly clever I mean hell does a lump of very
clever I mean hell does a lump of very
clever I mean hell does a lump of very solid very dense rock bounce off the
solid very dense rock bounce off the
solid very dense rock bounce off the surface of a liquid don’t know then
surface of a liquid don’t know then
surface of a liquid don’t know then we’ll show you and there it is a French
we’ll show you and there it is a French
we’ll show you and there it is a French bloke called professor Bach Hayes worked
bloke called professor Bach Hayes worked
bloke called professor Bach Hayes worked this out and it explains exactly how of
this out and it explains exactly how of
this out and it explains exactly how of why are stone skins to be honest it’s
why are stone skins to be honest it’s
why are stone skins to be honest it’s hugely complicated but we will tell you
hugely complicated but we will tell you
hugely complicated but we will tell you that skimming is possible because of the
that skimming is possible because of the
that skimming is possible because of the reactive force that water exerts on
reactive force that water exerts on
reactive force that water exerts on anything that hits it if a stone with a
anything that hits it if a stone with a
anything that hits it if a stone with a large enough surface area hits it
large enough surface area hits it
large enough surface area hits it traveling at a shallow enough angle and
traveling at a shallow enough angle and
traveling at a shallow enough angle and at sufficient velocity then the
at sufficient velocity then the
at sufficient velocity then the reactionary force from the water will
reactionary force from the water will
reactionary force from the water will send it back up into the air again
send it back up into the air again
send it back up into the air again our boys attempts to gain sufficient
our boys attempts to gain sufficient
our boys attempts to gain sufficient velocity to skim like stones and
velocity to skim like stones and
velocity to skim like stones and effectively walk on water
effectively walk on water
effectively walk on water the falling woefully short of the mark
enough speed to stand on water even in
enough speed to stand on water even in our bare feet
barefoot waterskiing worked on the same
barefoot waterskiing worked on the same principle as skimming stones and again
principle as skimming stones and again
principle as skimming stones and again the crucial factors that allow you to
the crucial factors that allow you to
the crucial factors that allow you to stay up on the surface of the water are
stay up on the surface of the water are
stay up on the surface of the water are speed and surface area of contact with
speed and surface area of contact with
speed and surface area of contact with skis on which are basically a way of
skis on which are basically a way of
skis on which are basically a way of increasing the area of contact you could
increasing the area of contact you could
increasing the area of contact you could stay up even if the boats only traveling
stay up even if the boats only traveling
stay up even if the boats only traveling at 30 kilometers an hour so the physics
at 30 kilometers an hour so the physics
at 30 kilometers an hour so the physics is pretty straightforward and it looks
is pretty straightforward and it looks
is pretty straightforward and it looks simple enough great
simple enough great
simple enough great the boys are dying to try it for
the boys are dying to try it for
the boys are dying to try it for themselves the problem is that at these
themselves the problem is that at these
themselves the problem is that at these sorts of speeds the pressure being
sorts of speeds the pressure being
sorts of speeds the pressure being exerted on the human body as you try and
exerted on the human body as you try and
exerted on the human body as you try and rise out of the water are immense
then you can get utterly exhausted in a
then you can get utterly exhausted in a matter of seconds basically you’re
matter of seconds basically you’re
matter of seconds basically you’re trying to drag yourself through tons of
trying to drag yourself through tons of
trying to drag yourself through tons of water hitting you at speed
after nine attempts richard was
after nine attempts richard was exhausted time for Johnny to have a go
exhausted time for Johnny to have a go
exhausted time for Johnny to have a go almost everyone who learns to do this
almost everyone who learns to do this
almost everyone who learns to do this starts out wearing these small rubber
starts out wearing these small rubber
starts out wearing these small rubber shoes with a wide sole because they give
shoes with a wide sole because they give
shoes with a wide sole because they give a slightly bigger surface area of
a slightly bigger surface area of
a slightly bigger surface area of contact with the water they help you to
contact with the water they help you to
contact with the water they help you to learn the correct technique at slightly
learn the correct technique at slightly
learn the correct technique at slightly lower speeds
lower speeds
lower speeds Johnny managed to get up on his fourth
Johnny managed to get up on his fourth
Johnny managed to get up on his fourth attempt and a small fall was there to
attempt and a small fall was there to
attempt and a small fall was there to stop him from trying again this isn’t
stop him from trying again this isn’t
stop him from trying again this isn’t just fun this is Professor Bacchus
just fun this is Professor Bacchus
just fun this is Professor Bacchus theory in action as Johnny demonstrates
theory in action as Johnny demonstrates
theory in action as Johnny demonstrates that even a heavy object can skim on
that even a heavy object can skim on
that even a heavy object can skim on water providing its traveling at
water providing its traveling at
water providing its traveling at sufficient velocity
he’s done it johnny is traveling at 65
he’s done it johnny is traveling at 65 km/h and just a few centimetres of each
km/h and just a few centimetres of each
km/h and just a few centimetres of each foot are in contact with the water
foot are in contact with the water
foot are in contact with the water skimming the surface it’s the nearest
skimming the surface it’s the nearest
skimming the surface it’s the nearest any human can get to actually walking on
any human can get to actually walking on
any human can get to actually walking on no sir
”
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