An emulsion shock is  a shock that allows the air and oil to mix; it does not utilize an internal rubber bladder. Silicone oil doesnât compress well without the help of some air to displace the space taken up by the piston when itâs moving within the shock body.
The Joy of Mechanical Force. (The Foundation of Futurism [Manifesto of Futurism, 1909], translated from the French by Eugen Weber, reprinted by permission of Dodd, Mead and Company from Paths to the Present by Eugen Weber. Copyright 1960 by Dodd, Mead and Company, Inc.)
Serialised in the New Yorker during the summer of 1962, Silent Spring was published that September. It remains one of the most effective denunciations of industrial malpractice ever written and is widely credited with triggering popular ecological awareness in the US and Europe.