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Windmills

Windmills are machines used to convert wind energy into other usable forms. They are commonly used for the pumping of water or milling of grains.

841 Questions

What kind of energy does a compass use?

A compass does not use energy to function, as it relies on Earth's magnetic field for its operation. The needle in a compass aligns itself with the Earth's magnetic field, pointing towards the magnetic North Pole.

Why are windmills so large?

Windmills are large in order to capture as much wind energy as possible. The larger the windmill blades, the more wind they can catch and convert into rotational energy to generate electricity. A large size also helps in producing more energy efficiently, making wind energy a cost-effective renewable energy source.

When you get the wind knocked out of you which of the lung volumes have been knocked out of you and why?

According to Chris Freyberg, acting director of the Emergency Department at New York Downtown Hospital, getting the "wind knocked out of you" is not a loss of lung air volume but rather a temporary paralysis of the nerve to the diaphragm.

A blow to the chest can stun the phrenic nerve (roots C3,4,5), which supplies innervation to the diaphragm. The diaphragm is unable to contract (lower) as a result, preventing subsequent volume changes that facilitate breathing.

Credit to Jeffrey Kluger, "Two Fisted Science", Discover Magazine, 07/01/1993

How loud are windmills?

The noise level of windmills typically ranges from 35 to 50 decibels at a distance of about 300 feet, which is comparable to the sound of a quiet conversation or a refrigerator running. Modern wind turbine designs have significantly reduced noise levels compared to older models.

What is the purpose of windmills?

Windmills are primarily used to generate electricity from wind energy. They convert the kinetic energy of the wind into mechanical power, which is then converted into electricity through a generator. Windmills are a renewable energy source that helps reduce reliance on fossil fuels and lower carbon emissions.

Do windmills need electricity to work?

No. Well, not really. Some windmills run on wind alone (like the old Dutch windmills). Others use the wind to create electricity, and use some of that electricity to perform their own asks (such as rotating their fins to take best advantage of the wind they are catching). I'd expect big wind turbines would have their own processors and communications equipment to relay data and handle chores like aiming themselves to the wind and pitching the blades. They probably run and draw some power even when the turbine isn't generating it's own.

What makes a windmill turn?

A windmill turns because of the force of the wind pushing against its blades. This force causes the blades to rotate, which in turn powers machinery or generates electricity. Windmills have been used for centuries to harness wind power for various purposes.

How much can windmills weigh?

Don't depend on someone to answer this question for you. Try to figure it out yourself!

What type of simple machine is a windmill?

A windmill is a type of simple machine known as a wheel and axle. The wind causes the blades of the windmill (wheel) to rotate around an axis (axle), converting wind energy into mechanical energy.

How do older windmills and new windmills differ?

Older windmills typically have a simpler design with smaller blades and lower efficiency compared to newer windmills. New windmills are larger and more advanced, with improved technology and taller towers to capture stronger winds at higher altitudes. Additionally, newer windmills can generate more electricity due to enhanced power conversion systems.

How does a wind mill rotating slowly can generate power?

A windmill generates power through its blades capturing the kinetic energy of the wind and converting it into mechanical energy. This mechanical energy is then transferred to a generator, which converts it into electrical energy. The speed at which the windmill rotates affects the amount of power it can generate.

How tall were the typical farm windmills in 1900?

how tall were the typical farm windmills in 1900

How does a windmill grind grain?

The windmill's blades act like a rotating fan which pushes the rod attached to it to the direction the wind is blowing. As it goes to the end of the rod, the stone, which is attached to the rod too spins. This causes the two stones which are joint together crush and grind the grain between them.

What are the negatives to windmills?

The Main problem with Windmills is they will only run when there is enough Wind.

Why do you need wind energy?

Wind energy is needed as a renewable and sustainable source of electricity generation that helps to reduce carbon emissions and combat climate change. It also diversifies our energy sources, enhances energy independence, and creates jobs in the clean energy sector. Additionally, it provides a reliable source of power that can help to stabilize the grid and improve energy security.

What are some disadvantages about wind mills?

Some disadvantages of windmills include their potential impact on local wildlife, such as birds and bats, the intermittency of wind as a power source, which can require additional energy storage solutions, and the visual impact they may have on the landscape, which can be seen as unsightly to some people.

How do you get power from wind mills?

Weather creates masses of moving air. Some of the energy of the air can be captured by a windmill or wind turbine and converted into another form.

In a modern wind turbine the blades are aerodynamically shaped to get the most power from the wind. The blades turn a generator which produces electrical energy.

What produces energy?

Energy is produced from various sources such as fossil fuels, renewable sources like solar and wind power, nuclear reactions, and by harnessing the energy stored in chemical bonds through processes like combustion and cellular respiration. Ultimately, energy is created by converting one form of energy into another through various natural and human-made processes.

Can windmills break?

Yes, windmills can break due to a variety of reasons such as mechanical failures, extreme weather conditions, or improper maintenance. Regular maintenance and monitoring of windmills are essential to prevent breakdowns and ensure optimal performance.

Are there wind chimes mad from sand that has been struck by lightning?

Finding glass that is made from a lightening strike is rare. This is an object that may only be found in a few specialty shops. However, it would be an interesting art project for someone who finds such glass.

How many sails are there on a windmill?

Windmills typically have four sails, or blades, although some designs may have more or fewer depending on the specific type of windmill and its purpose. Each sail is attached to a rotating shaft that helps generate power from the wind.

How many blades does a windmill have?

Most modern windmills have three blades, as this design balances efficiency, stability, and cost-effectiveness. Some older or smaller windmills may have fewer blades, usually two. Ultimately, the number of blades can vary depending on the specific design and purpose of the windmill.

How tall are windmills?

The height of windmills can vary, but on average, they are between 200 to 300 feet tall. Offshore wind turbines tend to be taller than land-based ones, with some reaching heights of over 600 feet.

Which way does a windmill spin?

However the blades are oriented. Look at a ceiling fan, the blades are shaped so that it will blow air down (there's a switch on there to make it spin and suck air up). A windmill is made to spin when wind blows and this rotates the handle on a pump to make water come out of a well.