Windmills

Well.. In the "old days" windmills would provide the energy to power machines for producing clothing, food & farming requirements. Back then, the windmills didn't rely on "the grid" which is the way we get electricity now. It wasn't connected then and the power simply came from the wind blowing the large "fan" in a direction, which then moved a gear connected to the fan connected to a machine. Now the windmills are much more sophisticated and rely on many bases of electricity in some form. This is so we can all have access to it. So back then they were really effective in the principle of being a "windmill" . How are they now? We don't know the answer to that yet because we are not relying on them for anything immediately significant today.

Yes, a windmill typically has rotational symmetry because it looks the same when rotated around its central axis by certain angles. This is commonly seen in the blades of a windmill where each blade is identical and symmetrically arranged around the axis.

The energy needed to create electricity from a windmill comes from the kinetic energy of the wind. As the wind blows, it causes the blades of the windmill to rotate, which drives a turbine connected to a generator that converts the mechanical energy into electrical energy.

Assuming that you're talking about a wind-powered electrical generator (such as a "wind farm"), the energy conversion is from mechanical to electrical. When the wind blows on the blades of the mill it rotates them, creating mechanical energy. This mechanical energy is used to power the electrical generator inside the mill, creating electrical energy out of mechanical energy.

Classic windmills include a tail. At normal wind speeds it will face the windmill into the wind. During storms they need to be furled which will turn the windmill away from the wind.

The newer windmills are tailless and are motorized, and will also turn the windmill into the wind. They are probably more stable with shifting wind patterns and can be designed to be self furling.

Vertical axis windmills are not directional, and do not need to be turned into the wind. They will not show the direction of the wind.

Windmills are designed to operate within a specific range of wind speeds. High winds can damage a windmill if it exceeds its design limits, leading to mechanical stress and potential failure. However, modern wind turbines are equipped with safety mechanisms such as brake systems and pitch control to prevent damage during high wind conditions.

It is generally not illegal to touch a windmill as long as you are not causing any damage or entering restricted areas. However, some windmills may be on private property or have safety regulations in place, so it's best to respect any signs or notices posted.

Windmills work by harnessing the power of wind to turn blades, which are connected to a central shaft. This spinning motion generates mechanical energy that can be used to grind grain, pump water, or generate electricity. The blades are designed to capture the energy from the wind and convert it into rotational movement.

The first windmills had wooden blades that were around 10-15 feet long, and they typically had four blades. These early windmills were used for pumping water and grinding grains.

Wind mills are used to harness the power of wind and convert it into energy such as electricity. They are a renewable energy source and help reduce reliance on fossil fuels, contributing to a more sustainable and environmentally friendly energy production.

The kinetic energy of the moving air (wind) is converted into mechanical energy, which then turns the blades of a windmill. This mechanical energy is further converted into electrical energy through a generator connected to the windmill.

Windmills produce electricity by harnessing the kinetic energy of the wind. The wind causes the blades of the windmill to rotate, which in turn drives a generator to produce electricity.

Windmills use kinetic energy from the moving air to turn the blades, which then drive a generator to produce electrical energy. This process converts the wind energy into usable electricity.

A windmill converts wind energy into mechanical energy by turning the blades. The mechanical energy is then converted into electrical energy by a generator located inside the windmill.

A windmill generates energy by converting the kinetic energy of the wind into mechanical energy through its blades. The rotating blades turn a rotor inside the windmill, which drives a generator to produce electricity. This electricity can then be used to power homes, businesses, or other devices.

The measurements of a windmill can vary depending on the size and design. The typical height of a windmill can range from 20 to 80 meters tall, with rotor diameters ranging from 50 to 120 meters. The size of the tower, blades, and overall structure will depend on the power output and location of the windmill.

A windmill is a structure that uses wind power to grind grain or pump water, often for traditional or agricultural purposes. A wind turbine, on the other hand, is a device that converts wind energy into electricity for commercial use. Wind turbines are typically larger and more complex than windmills.

Windmills generate power by converting the kinetic energy of moving air (wind) into mechanical energy through the rotation of their blades. If there is no wind, windmills do not produce power because there is no motion to drive the turbines.

Most usually as in the past, to pump well water to irrigate their fields with. Holland is a good example with the way they pump water out of the swamps.
However, only recently, here in Wyoming a local farm installed a bunch of wind mills to generate electricity with & get paid by the power companies.
They don't realize that all actions have subsequent reactions. To burn oil is to create smoke. To install windmills will, as they will eventually find out, will slow the wind & slow the rotation of the Earth.
Overpopulation is the problem, not the answer.

A windmill is typically used to grind grain or pump water, and has a larger number of blades with a horizontal axis. On the other hand, a wind turbine is used to generate electricity, with fewer blades and a vertical axis. Wind turbines are more efficient and designed for modern renewable energy generation.

Most commonly through windmills. the wind pushes on a tilted blade causing it to rotate. A generator inside the windmill then truns the kinetic energy of the rotation into an electric current.
u blow on it

Depends on the size of the windmill and how much wind is available.

Domestic wind turbines are an interesting hobby, but practically cost so much they will struggle to break even over 25 years. You can't rely on it to be windy enough in most places.

Large scale Wind Farms can provide huge amounts of energy but obviously you can't put them in your back yard.

Home Depot sells a residential wind turbine that outputs up to 900 watts or 60 amps (in ideal conditions). The largest wind turbines can generate up to 7 megawatts!

While windmills and wind turbines both harness wind energy, they serve different purposes. Windmills are traditionally used to mill grain or pump water, while wind turbines are used to generate electricity. Wind turbines have a more modern design and typically operate on a larger scale than traditional windmills.