Creep – Radiohead

FM – Steely Dan

The Real Me – Who (Quadrophenia)

Sine waves with different frequencies

d2u + (au - 2qucos2ξ)u = 0 Mathieu eqn.

Fundamentals

dξ2 u = r or z

U, V : DC and RF voltagesΩ : frequency of trapping RFro : distance between electrodem : mass of the ion

az = -16eUm(r0

2)Ω2

qz = 8eVm(r0

2)Ω2ion’s secularfrequencyωz=βzΩ/2

In 1966 Syntex Corporation attempted to buy Electronic Associates’ California subsidiary, of which Robert Finnigan was director. The acquisition failed, but it prompted Finnigan to suggest to Mike Story that they form their own company to exploit the new quadrupole gas chromatography–mass spectrometry (GC-MS) technology. Finnigan Instrument Corporation was formed, with Robert Finnigan as president, Bill Fies in charge of electronic design, Richard Hein as residual gas analyzer project leader, and Mike Story heading mass spectrometer design. Soon afterward, T. Z. Chu, general manager of Varian Associates’ Gas Chromatography Division, joined the group.