All biological life on planet earth depends upon the light (energy) in the universe. Most of the light on earth comes from the sun. It travels from the sun to the earth in the rays that the sun gives off. The sun’s rays are needed so that the plants can make food using photosynthesis. The food that plants make is the food on which animals in the world depend on in order to live. Animals and human beings use the energy found in food to operate their bodies and muscles. The sun’s energy is stored up in coal, wood, and oil, which people burn to do work for them. The sun evaporates the water which falls as rain. this causes rivers to flow and produce energy that people can use. The amount of energy on the earth’s surface each year is equal to that supplied by 250 million tons of coal.
Energy is one of the two fundamental ideas in physics. The other is matter. These two ideas are not completely separate. There are two laws of energy. The first law of energy states :Although energy cannot be created or destroyed, it can be converted from one form to another. The second law of energy states :Whenever energy is converted from one form to another, a certain amount is lost in the form of heat.
Getting back to the sun, the sunshine that warms you on your way to school or work reached your skin only 8 minutes after leaving the sun’s surface roughly 93 million miles away. The sun releases many forms of energy. The total range of radiant energy released from the sun is known as electromagnetic spectrum. In the spectrum visible light (sunshine) that we are familiar with is only a small portion of the entire spectrum. The types of energy represented in the spectrum range from low energy radio waves to high energy gamma rays. We know that visible light can be broken down by a prism into the seven colors (red,orange, yellow, green, blue, and violet). this is also seen in a rainbow. Job 32:24a gives us this concept. “By what way is light parted.”
Sunlight energy fuels plants when it is captured during photosynthesis, the process by which solar energy is used in the conversion of carbon dioxide and water into sugar. With a few minor exceptions, this process can occur only in the presence of chlorophyll, a green pigment found in algae, some bacteria, and plants. In a sense, the solar energy is trapped by the chlorophyll and channeled into sugar molecules in the form of chemical energy.
As Christians we need to thank God for creating the light. When He said, “Let there be light and there was light.” (Genesis 1:3) For He is the Light (John 1:9). “For God, who commanded the light to shine out of the darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.” (II Corinthians 4:6)