A NOTE ON IRIDECTOMY FOR "OCCLUSIO PUPILLÆ SINE SECLUSIONE PUPILLÆ."

A Note on Roe's Characterization of the Sine Function

Let f (n)n = 0, ? 1, ?2, ... be a sequence of complex valued functions on the real line with (d/dx)f(n) = f(n+l) and satisfying inequalities If (n)(x) I < Mn (1 + IXI)k where as n -X oo the growth conditions lim Mn (1 + ,)-n = 0 and limM-n(1 + e)-n = 0 hold for all e > 0. Then f(0)(x) = p(x)eix + q(x)e-ix where p and q are polynomials of degree at most k. In his paper [1] J. Roe proves Theorem ...

Application Note 263 Sine Wave Generation Techniques

Producing and manipulating the sine wave function is a common problem encountered by circuit designers. Sine wave circuits pose a significant design challenge because they represent a constantly controlled linear oscillator. Sine wave circuitry is required in a number of diverse areas, including audio testing, calibration equipment, transducer drives, power conditioning and automatic test equip...

Involuntary Iridectomy

Sir,?As Captain Duer suggests i" the Indian Medical Gazette, October 1901, it would interest us much to hear more from our experienced operators of the cause of this accident of involuntary iridectomy. I have often wondered why more has not been said about it. When it has happened to me I have always put it down to want of skill. Perhaps it has been so. I do not believe that it is always due to...

On Iridectomy in Certain Complications of Iritis

Involuntary Iridectomy

Sir,?I must plead guilty to having performed many iridectomies unintentionally, and at the same time point out the cause of this little accident in most of my cases. This was a "bellying" of the blade of the Grafe's knife. If instead of the knife being, except at the point, of equal thickness and width there be a " belly " or greater width in the forepart of the blade, leaving the part near the...