Egyptian incense burner, seventh century BC Combustible bouquets were used by the ancient Egyptians, who used incense in both equally pragmatic and mystical capacities. Incense was burnt to counteract or obscure malodorous goods of human habitation, but was commonly perceived to also deter malevolent demons and appease the gods with its pleasant

It has a wavelength which may be observed through the human eye.[one] Animals might also see light. Light makes up a small A part of equally the electromagnetic spectrum and radiation supplied off by stars such as Sunlight.Like all electromagnetic waves, light can journey through a vacuum. The transverse character of light is often shown by means o