Meanwhile on Planet Earth, fossil fuel is becoming dirt cheap and there are 2,440 coal plants being planned around the world.
The NYTimes reports:
Meanwhile on Planet Earth, fossil fuel is becoming dirt cheap and there are 2,440 coal plants being planned around the world.
The NYTimes reports:
“Dear passengers, we regret to inform you that the batteries of this plane came to an end after take-off, we hope all of you have signed your contract insurance at the cemetery, have a nice day.”
Did they ‘measure’ the amount of cargo capacity lost to the mass of storage batteries?
Also, a beanie cap with a propeller is NOT a helicopter, and running down the road (even at 70 mph) with pinwheels is not the same as getting propulsion (thrust) from propellers.
The aerodynamics on the blades is completely different whether they are pushing or being pushed by the wind.