Two allotropes of tin occur near room temperature. The first form of tin is called gray tin and is stable at temperatures below 13.2Â°C (55.76Â°F). There are few, if any, uses for gray tin. At temperatures above 13.2Â°C, gray tin slowly turns into tin's second form, white tin. White tin is the normal form of the metal and has many uses.
Colours have been added for illustrative purposes and have no other significance. In parapsychology and spiritual practice, an aura is a supposed field of subtle, luminous radiation surrounding a person or object like the halo or aureola in religious art. The depiction of such an aura often connotes a person of particular power or holiness.
Aura Room. 1  Welcome to Psychic Libraryâs Aura Room, one of the more colorful rooms in the library. An aura is a colorful, multilayered oval energy field that is sometimes referred to as a psychic energy field. All living things are surrounded by an aura, which are oval-shaped, colored bands of sounds, lights and vibrations. Each layer within the aura vibrates differently.