Wilkins and Franklin got an image of DNA in an x shape. In science  this was a helix. Watson and Crick made a model out of cardboard  after Watson saw the image.They realiz â¦ ed then that DNA was a  double helix.he and Maurice Wilkins worked together and took some x-rays of DNA. The DNA crystallography allowed Watson and Crick to look at the picture to determine it was a double helix â¦ and not a triple helix as Linus Pauling had thought. he said omg i look like my dad!!
Amphetamine (contracted from alphaâmethylphenethylamine) is a potent central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity. Amphetamine was discovered in 1887 and exists as two enantiomers: levoamphetamine and dextroamphetamine.Amphetamine properly refers to a specific chemical, the racemic free base, which is equal parts of the two enantiomers, levoamphetamine and dextroamphetamine, in their pure amine forms.However, the term is frequently used informally to refer to any combination of the enantiomers, or to either of them alone.he side effects of amphetamine are varied, and the amount of amphetamine used is the primary factor in determining the likelihood and severity of side effects. Amphetamine products such as Adderall, Dexedrine, and their generic equivalents are currently approved by the USFDA for long-term therapeutic use.
Amphetamine (AMP) is a Schedule II controlled substance available by prescription (DexedrineÂ®) and is also available on the illicit market.Amphetamines are a class of potent sympathomimetic agents with therapeutic applications.ore acute responses produce anxiety, paranoia, hallucinations, and psychotic behavior. The effects of Amphetamines generally last 2-4 hours following use and the drug has a half-life of 4-24 hours in the body.