Energy conversion windmill magnifier! What is the energy conversion of windmill and why? What is the energy conversion of magnifying glass and why?

Wind energy, if equipped with a generator, is electrical energy
The magnifying glass does not convert energy,

What is the energy conversion of windmill when it rotates in the wind?

When the windmill rotates in the wind, the kinetic energy of the air is converted into the kinetic energy of the windmill

The windmill can rotate under the action of wind. Please analyze how the energy is converted in this process

The kinetic energy of the air is converted into the kinetic energy of the windmill

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