When light meets a water droplet, it is refracted at the boundary of air and water, and enters the droplet, where the light is dispersed into the seven colors. The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.hen light meets a water droplet, it is refracted at the boundary of air and water, and enters the droplet, where the light is dispersed into the seven colors. The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.
Valium belongs to a class of drugs called benzodiazepines, which work by increasing the effects of GABA, a neurotransmitter that moderates the activity of nerve signals in the brain. The Food and Drug Administration (FDA) approved diazepam in 1963 under the brand name Valium for the Roche drug company.
Valium Abuse and Addiction. Valium is a benzodiazepine with properties of being a sedative, hypnotic, anxiolytic, anticonvulsant, amnestic and muscle relaxant drug. Valium is generally used to treat short term moderate to severe anxiety or insomnia.alium is usually a secondary drug of abuse and used mainly to potentiate the âhighâ obtained from other drugs. However, even legitimate and therapeutic usage of valium is associated with an inherent risk of addiction and physical or psychological dependence. Withdrawal symptoms of valium include: 1  Convulsions.