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Quickie

Major
Need advice on Pole Electric Chain Saw, for cutting tree branches in home garden. I have never used chain saw before, please kindly give advise based on your experience, on ease of use, maintenance, safety, handling etc. Thanks in advance.
I've never used one before but as with any kind of powered tool, wear a shoe or anything with a rubber sole to prevent electric shock. Obviously, not advisable to use it after the rain when the branches and ground are wet. Also get children out of the way as usual when using anything with a pole. They tend to get behind you where the end of the pole is going and may get hit by it. Hope my 2 cents advise would help.
 

plawolf

Brigadier
Here is a random technical theory I have, which hinges on one question - how quickly could electronic magnets change their polarity?
 

vesicles

Major
Here is a random technical theory I have, which hinges on one question - how quickly could electronic magnets change their polarity?
My layman understanding is that it would happen as fast as the current flows, which makes it within milliseconds or even microseconds?
 

Quickie

Major
The limitation would fall back to the switching circuits driving the magnets. The thing is, the train would have long exceeded the safe speed limit long before the electro-mechanical mechanism of the switching circuits even begin to start having problem coping with the very high switching speed.
 

dtulsa

Junior Member
I hope this story is a fake but it's being reported China has agreed to join in the air campaign with Russia has anyone else heard this I really don't believe it
 

Jeff Head

General
Staff member
Super Moderator
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  • #28
I hope this story is a fake but it's being reported China has agreed to join in the air campaign with Russia has anyone else heard this I really don't believe it
It is not true...and has been reported and debunked here several times.
 

SteelBird

Major
How long have you not visit sinodefence.com? I visited it recently (accidentally), look like the site has some improvement and some more information regarding Chinese defence affair.
 
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