KITE EXPERIMENTS AT THE WEATHER BUREAU

The Weather Bureau and the Cranberry

In this country the cranberry is indigenous to the marshes, chiefly in the Northern States; but some wild cranberries are found as far south as North Carolina, both in the swamps of the mountain region in the northwestern portion of that State and near the coast, in Pender County. They are also found to a slight extent in some portions of northern Europe, especially in Finland and the Scandinav...

Pyrheliometer Calibration Program of the U . S . Weather Bureau

A new system developed for calibrating the horizontal incidence pyrheliometer is described. The pyrheliometers to be calibrated are exposed simultaneously with a standard pyrheliometer in an integrating sphere. Calibrations are made by comparing voltages developed by the instruments undergoing calibration with those of the standard pyrheliometer. Calibration of the standard pyrheliometer is bas...

DEPARTMENT OF COMMERCE SINCLAIR WEEKS , Secretary WEATHER BUREAU F . W . REICHELDERFER , Chief MONTHLY WEATHER REVIEW

Simultaneous measurements of turbulent vertical velocity fluctuations at a height of 300 ft. measured by means of a fixed anemometer, small floating balloons, and airplane gust equipment at Brookhaven are presented. The resulting Eulerian (fixed anemometer) turbulence energy mectra are similar to the Lagrangian (balloon) spectra but "-with a displacement toward higher frequencies. The term Eule...

High-Frequency Scatter Sounding Experiments at the National Bureau of Standards.

The Symplectic Penrose Kite

The purpose of this article is to view the Penrose kite from the perspective of symplectic geometry. Mathematics Subject Classification 2000. Primary: 53D20 Secondary: 52C23 Introduction The kite in a Penrose aperiodic tiling by kite and darts [8, 9] is an example of a simple convex polytope. By the Atiyah, Guillemin–Sternberg convexity theorem [1, 6], convex polytopes that are rational can be ...