Hello Mike and all,
I expect the impoundment of water in hydro power reservoirs adds mass to
northern hemisphere. This would effect the rotation of the earth adding a
bit of wobble like an out of balance top. Perhaps this wobble could affect
precession in the long run. Tidal power? Not so
The angular momentum of the Earth-moon system has to be conserved, so if the
Earth's rotation slows more, then the moon speeds up in its orbit and moves
further away from the Earth. Currently, as a result of the ongoing secular
deceleration of the Earth (due to tidal friction), the moon moves
Logically, tidal power should slow the Earth's rotation.
Mechanical energy, imparted by the combined gravitation of the Sun and Moon
is converted to electrical energy, then primarily dissipated as heat. Drag
applied to the tidal surge must, to some extent, add drag to the Earth's
rotation.
On 01/01/2017 12:30, Frank King wrote:
Dear All,
I hope you all enjoyed the extra second
in bed this morning and that your alarm
clock didn't go off one second early.
Here is an easy question to start off
the New Year...
Every Sunday at 08:00 I check the first
stroke of the hour-bell of the
Frank wrote:
<>
I was at a talk recently by a guy who was promoting the use of tidal
energy.
(You know what you are going to get every day was his main theme"
At the end he invited questions, so I asked if the generation of
electricity by the use of tidal power would slow down the earth or
Dear All,
The voting pattern has swung away from
1.5s to 0.5s and we shall see whether
this trend continues!
There is an embellishment to Mike Shaw's
comment:
The radio clock stopped for 1 second
at midnight
This isn't quite what happens. Indeed,
there seems not to be a general pattern.
?Yes, perhaps 0.5 seconds is it. Last Sunday it was 0.5 seconds fast and Frank
did something with the coins to change its rate. This Sunday it is 1 second
fast, discounting the leap second. So, the clock gained an additional 0.5
seconds in the week. Did I get it right this time? More/fewer
Well I think I'll go for 0.5 seconds.
Frank's clock has apparently gained 1.5 seconds in the week.
The radio clock stopped for 1 second at midnight, but Frank's didn't and
so gained 1 second.
Mike Shaw
---
1.5 seconds? The clock is two seconds fast this morning due to its natural rate
and the leap second. By the way, did anyone catch the seven pips live on BBC
Radio 4 last night? Using the BBC's "listen again" feature, none of the other
BBC radio stations carried the pips at midnight; they all
Dear All,
I hope you all enjoyed the extra second
in bed this morning and that your alarm
clock didn't go off one second early.
Here is an easy question to start off
the New Year...
Every Sunday at 08:00 I check the first
stroke of the hour-bell of the University
Clock against a
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