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8 ore fa · 1941 – Andrew McKellar detected the cosmic microwave background as the coldest component of the interstellar medium by using the excitation of CN doublet lines measured by W. S. Adams in a B star, finding an "effective temperature of space" (the average bolometric temperature) of 2.3 K.
8 ore fa · Andrew is an electrical engineer with an extensive background in providing power solutions to mining and infrastructure projects. My background is in business management and development, from multi-national organisations to smaller start-ups – so I have loved the journey of starting and growing Australian Power Equipment.
