Breasts, Bottles and Babies

Babies, Bottles, and Bisphenol A: The Story of a Scientist-Mother

M y 11-month-old daughter loves her baby bottles and sippy cups (fi rst-person narrative is from the viewpoint of Rebecca Roberts). But as I sit and watch her drink from them, I cringe, because I happen to be a scientist who studies a chemical found in those bottles and cups. I also know that some scientifi c research suggests that exposure to that compound, called bisphenol A (BPA), is detrime...

First Opinion: Babies, Babies, and More Babies

From Klein Bottles to Modular Super-Bottles

A modular approach is presented for the construction of 2-manifolds of higher genus, corresponding to the connected sum of multiple Klein bottles. The geometry of the classical Klein bottle is employed to construct abstract geometrical sculptures with some aesthetic qualities. Depending on how the modular components are combined to form these “Super-Bottles” the resulting surfaces may be single...

Klein Bottles and Simple Currents

The standard Klein bottle coefficient in the construction of open descendants is shown to equal the Frobenius-Schur indicator of a conformal field theory. Other consistent Klein bottle projections are shown to correspond to simple currents. These observations enable us to generalize the standard open string construction from C-diagonal parent theories to include non-standard Klein bottles. Usin...

Babies

This little brochure is an altogether admirable one for the expectant mother and mother. In simple language it deals with the ordinary problems of maternity from a non-technical standpoint. The expectant mother is counselled to consult her medical adviser twice during pregnancy: once within the first three months, to ward off such dangers as eclampsia, osteomalacia and the like; the second time...