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Human power is timed rate of work done by a human. Most humans can exert only less than one-half horsepower for a duration of a few minutes. World records of power performance by humans are of interest to work planners and work-process engineers. The average level of human power that can be maintained over a certain duration of time, say over the extent of one minute or one hour is interesting to engineers designing work operations in industry. Flight across the English Channel by a pilot using only his human power (and incidental lifts from some rising air currents usually offset by low-level downdrafts) exhibits one stark use of human power.

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Measuring Human Power (HP)

There are many ways scientists and engineers measure human power. The huge industry of body-weight control relates to human power as calories are counted for a day's time, while the International System of Units has the watt (W) as the unit of measure for power. Dieting is the practice of ingesting food in a regulated fashion to achieve or maintain a controlled weight Conversion factors to reach expressions in other units can be handy, e. Conversion of units refers to conversion factors between different Units of measurement for the same Quantity. g. , if one wants to convert ft-lbs/s to watts (W), or watts to horsepower (hp), then that can be done to fit particular discussions. E. g. , 1 hp = 745. 69987 W. Defining the action would be part of a story about a particular work effort that gives a power rating. In Electrical engineering, the power rating of a device is a guideline set by the manufacturer as a maximum power to be used with that device

Human Power for Powering Vehicles (HPV)

The rickshaw is just one form of a HPV. There are HP-bicycles, HP-streamlined bicycles, HP-car, etc. The vehicles sometimes have more than one human powering the vehicle--a team effort occurs. Ancient mariners had large teams of slaves powering the rowing of large boats. Row boats are driven by HP.
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Human Power for Powering Machines (HPM)

Muscles are just one part of the human that provides energy to do the work to form power. The heat of human bodies has also been used to do work, like warming offices, bed chambers, food, another human, etc. Blowing up a toy balloon or a latex glove in preparing to place the glove over one's hand uses human power to effect changes. Physically challenged people might be limited to using their head and neck to do work in a certain amount of time. To move eye lashes accomplishes work in a certain amount of time, slowly or quickly. Machines driven by movements of the foot have received attention from ancient times.
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HP for Generating Electricity for Real Time Use or for Storage

Human power has been used to generate electricity that is then used directly or stored for future use in various storage devices. Electrical generator
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Human Power for Powering Aircraft (HPA)

Some HPA have the pilot hung tensionally below the lifting wing (thus they are human-powered aircraft of the hang glider type), but not all where the pilot may be in the wing or above the wing. In Electricity generation, an electrical generator is a device that converts Mechanical energy to Electrical energy, generally using Electromagnetic A human-powered aircraft (HPA is an Aircraft powered by direct human energy and the force of Gravity; the Thrust provided by the human may be the WING "ESPN 1410" is a commercial AM radio station in Dayton Ohio operating with 5000 watts at 1410 kHz with studios offices and transmitter located on David
Human power that is strictly only a part of the power source of an aircraft is still important; the human power used to extend a short glide to a longer glide is a human-powered aircraft.

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Human Power in Athletics

What level of power was exerted by the human who broke the world record in the running high jump, running long jump, weightlifting's snatch action, etc. A world record is the best performance in a certain discipline usually a Sports event The high jump is an Athletics (track and field event in which competitors must jump over a horizontal bar placed at measured heights without the aid of any devices The long jump is an Athletics (track and field event in which athletes combine speed strength and agility in an attempt to leap as far from the take-off point as possible Weightlifting, also called Olympic weightlifting or Olympic-style weightlifting, is a sport in which participants attempt a maximum weight single lift of a barbell  ? For the HP-aircraft to become a popular sport, engineers are aiming to design aircraft that will be affordable and successfully flown with the power output that a human sportsperson can exert. A certain amount of HP is used to effect a winning effort in the athletics event shot put, high jump, or hammer throw. The shot put is an Athletics (track and field event involving "putting" (throwing in a pushing motion a heavy The high jump is an Athletics (track and field event in which competitors must jump over a horizontal bar placed at measured heights without the aid of any devices The modern or Olympic is an Athletic throwing event where the object is to throw a heavy metal ball attached to a wire and handle
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Human Power and Green Revolution

References

U. The Green Revolution refers to the transformation of Agriculture that began in 1945 at the request of the Mexican government to establish an agricultural research station to S. Patents

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