Author Archives: Heidi B. Barney

If you think of it, without adequate sunshine intensity, life would be quite unbearable on planet earth. In fact, it would not exist on this planet. Sun virtually supports life on this planet. Medieval people used the sunlight to dry their grains and for lighting. Today, solar energy is converted to electric power using photovoltaic cells. This power is then used to power industries, homes and buildings. Sunlight is also used as a source of lighting during the day. Continue reading →