Let's make Nitrogen Laser

Theoretical Studies of Electrical Characteristics of the Nitrogen Laser

A theoretical analysis of the circuits for a nitrogen laser driven by the Blumlein or capacitor charge transfer transmission line is given in detail. The electrical characteristics of the charge line for a special case of resonant charging are discussed and the effects of various parameters on voltage and current are investigated. By using MICRO-CAP software the transient behavior of the curren...

Constructability of Trip-lets

A trip-let is an object as shown on the cover of Hofstadter’s book Gödel, Escher, Bach: a solid, threedimensional object that, when viewed from three orthogonal directions, shows three different letters. In this paper we consider two problems related to the construction of such objects for a given set of three letters. First, we want to know whether the silhouettes of the object correspond to t...

On Desugaring Polymorphic Lets

Existing type literature has conflicting views on desugaring polymorphic lets to lambda terms. The conflict arises because, in certain cases, desugaring does not preserve typing. We describe a transformation of polymorphic lets to monomorphic lets such that, when the monomorphic lets are desugared, the typing is preserved. Our transformation requires no changes to either term or type syntax. Th...

Make of Treatment Diode Laser with 670 nm and 5mw Output

FANCJ lets chromatin stay true

10.1083/jcb.2011iti1jcb.2011iti1Mitch [email protected] g1.epsIn This IssueNewsFANCJ lets chromatin stay true S chwab et al. show how a protein that unkinks DNA might help cells to maintain chromatin organization during DNA replication. The DNA replication machinery can run into ...