Certain metallic glasses have magnetic properties; their characteristics of ease of manufacture, magnetic softness, and high electrical resistivity make them useful in the magnetic cores of electricalpowertransformers. Glassmaking over the centuries
The Sun lies near the middle of the main sequence, and stars spend most of their lives on the main sequence. As stars burn up the hydrogen in their cores into helium, they become more luminous and cooler (because they have expanded) and therefore move off the main sequence into the ...
of having been baked and thermally metamorphosed at these contacts. The exposed intrusive rocks are found in a variety of sizes, from small veinlike injections to massive dome-shaped batholiths, which extend for more than 100 square kilometres (40 square miles) and make up the cores of the...
Certain metallic glasses have magnetic properties; their characteristics of ease of manufacture, magnetic softness, and high electrical resistivity make them useful in the magnetic cores of electrical power transformers. Glassmaking over the centuries glassblowingMolten glass on a glassblowing rod.(more)...
of having been baked and thermally metamorphosed at these contacts. The exposed intrusive rocks are found in a variety of sizes, from small veinlike injections to massive dome-shaped batholiths, which extend for more than 100 square kilometres (40 square miles) and make up the cores of the...
About 1952 the first relatively cheap RAM was developed: magnetic core memory, an arrangement of tiny ferrite cores on a wire grid through which current could be directed to change individual core alignments. Because of the inherent advantage of RAM, core memory was the principal form of main ...