The moment a bullet leaves a rifle barrel, it’s dropping. To compensate for that drop and get bullets where they need to go, long-range shooters use one of two units of measure: MRAD or MOA. Both are ...

Mechanism of action describes the process by which a molecule, such as a drug, functions to produce a pharmacological effect. A drug’s mechanism of action may refer to its effects on a biological ...

Enzyme mechanisms are the chemical transformations, and the steps within them, generated by enzymatic action on substrates. The mechanism of enzyme catalysis is similar in principle to other types of ...