Power and torque, as with many topics, are simple to understand, if explained concisely.
Force is mass times acceleration. (translation)
Torque is force times arm distance. (rotation)
(note: at that arm distance Force = Torque)
Work is Force times displacement. (translation)
Work is Torque times displacement. (rotation)
(note: displacement along the circular path)
Power is Work divided by Time.
You can't always overpower something simply by ;increasing power', the force component of power has to exceed that of the load.
Monday, October 23, 2017
Monday, October 16, 2017
Microwave power density
Simply stating wattage of a microwave seems inadequate. Microwaves come in different sizes. A 1500 watt small microwave has a higher power density than does a 1500 watt large microwave. Size being the internal cooking space. They should be rated with say watts/cubic meter, to indicate how long it will take for the meal to cook.
Efficient traffic convoy system
Starting and stopping at stoplights is a waste of energy, also it takes time for long group of cars to accelerate once stopped at a stoplight.
What would be better is to bunch up vehicles into a convoy all following the nearest 'virtual pace car'. Cars just ahead of the virtual pace car would slow down to get closer to the pace car, while cars behind the virtual pace car would speed up to catch up.
Within limits of course, never go above the speed limit to catch up, rather simply slow down to the next virtual pace car behind them.
The virtual pace car would be synchronized with the stoplights; the lights turn green just as it approaches a light. The cars will be bunched together so it wouldn't have to stay green for long to get a bunch of cars through. This will let cross traffic enter more often.
The virtual pace car can simply take a form of signs that simply indicate whether you should slow down or speed up to catch up to the nearest virtual pace car. Brakes and energy will be saved, smooth driving the whole way!
https://en.wikipedia.org/wiki/Traffic_light_control_and_coordination
https://en.wikipedia.org/wiki/Green_wave Same as convoy idea
https://en.wikipedia.org/wiki/Speed_sign Same as pace car idea
What would be better is to bunch up vehicles into a convoy all following the nearest 'virtual pace car'. Cars just ahead of the virtual pace car would slow down to get closer to the pace car, while cars behind the virtual pace car would speed up to catch up.
Within limits of course, never go above the speed limit to catch up, rather simply slow down to the next virtual pace car behind them.
The virtual pace car would be synchronized with the stoplights; the lights turn green just as it approaches a light. The cars will be bunched together so it wouldn't have to stay green for long to get a bunch of cars through. This will let cross traffic enter more often.
The virtual pace car can simply take a form of signs that simply indicate whether you should slow down or speed up to catch up to the nearest virtual pace car. Brakes and energy will be saved, smooth driving the whole way!
https://en.wikipedia.org/wiki/Traffic_light_control_and_coordination
https://en.wikipedia.org/wiki/Green_wave Same as convoy idea
https://en.wikipedia.org/wiki/Speed_sign Same as pace car idea
Sunday, October 15, 2017
Automatic loudness adjustment
Headphones should be smart. They should automatically sense minimum and maximum loudness of sound input and scale to a set minimum and maximum decibel scale.
Seems that even modern headphones simply amplify by a certain amount, no matter how quiet or loud the result is, ears be damned!
Furthermore volume settings should state decibels, knowing exactly the decibel output of a speaker system.
Seems that even modern headphones simply amplify by a certain amount, no matter how quiet or loud the result is, ears be damned!
Furthermore volume settings should state decibels, knowing exactly the decibel output of a speaker system.
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