Is there a way in which solar energy can be harnessed for use by humans directly? How can you relate this to the first law of thermodynamics.

The solar energy can be directly used as heat or natural light.

Explanation:

This enables us to conserve energy because energy conversion is less efficient compared than its direct use. The first law of thermodynamics states that the energy can be neither created nor destroyed, and that during the process of conversion many energy is lost as heat.