A cooler core for Earth

A Cooler Raman Laser

P ower dissipation, which results in heat generation in electronic chips, is the number one difficulty facing the semiconductor industry. The problem is so severe that it threatens to halt the huge development that has been enjoyed since the microprocessor industry’s inception — a doubling in processor performance roughly every 18 months, which was predicted by the celebrated Moore’s law. And t...

Potassium in the Earth ' S Core

POTASSIUM IN THE EARTH'S CORE Kenneth Alfred Goettel Submitted to the Department of Earth and Planetary Sciences on January 15, 1975 in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Progress in understanding the condensation of planetary constituents from the solar nebula necessitates a re-examination of models for the origin and composition of the Earth. All m...

Mantle and Core of the Earth

The inner inner core of Earth.

T solid inner core (Fig. 1) is the most remote and enigmatic part of our planet, and, next to the crust, is the smallest ‘‘official’’ subdivision of Earth’s interior. It was discovered in 1936 (1), and by 1972 it was established that it was solid, albeit with a very small rigidity (2–4). By 1993 it had been established that it was crystalline (5). The inner core is isolated from the rest of Ear...

Composition of the Earth ' S Core

New shock wave data (to 180 GPa) for pyri-•e (•---•eS2) shocked along (001) demonstrate hat this mineral, in contrast to other sulfides and oxides, does not undergo a major pressure-induced phase change over the entire pressure range (320 GPa) now explored. (This is probably so because of the initial, low-spin 3-d, orbital configuration +2 of Fe ). The primary evidence which indicates that a la...