Dendera Light
The Egyptians are said to have developed an electrical light bulb long before anybody else. There are three stone reliefs in the Hathor temple at the Dendera Temple complex located in Egypt.
Melatonin Mess
Artificial white light is known to suppress the production of an important hormone in our body, called Melatonin that is secreted by the Pineal gland in our Brain. Thus, a yellow filament light bulb is considered healthier for the human body than white light.