Dr Rajiv Desai
An Educational Blog
Critical Minerals
Critical Minerals: _ Tesla would not go out of business if supplies of cobalt vanished. But without it, the current generation of electric vehicles would not be able to drive as far between charges or remain in service as long without replacing the batteries. _ Section-1 Prologue: Archaeologists and historians describe early civilizations and periods of human history using terms such as the Stone Age, the Copper Age, the Bronze Age, and the Iron Age. Such descriptions reflect the fundamental importance of nonfuel minerals, metals, and materials technology and applications. Early civilizations were built to a significant degree using the seven metals of antiquity (in order of discovery): gold (6000 BC), copper (4200 BC), silver (4000 BC), lead (3500 BC), tin (1750 BC), iron (1500 BC), and mercury (750 BC). Each discovery led to a range of innovations and applications that provided a marked advantage until such time […]
Plane Crash
Plane Crash: “Flying is not inherently dangerous, but to an even greater extent than the sea, it is terribly unforgiving ….” —Captain A. G. Lumplugh, British Aviation Insurance Group ________ Section-1 Prologue: Flight is, and always will be a marvel of human achievement. The opportunity to “spread your wings” and fly is an unbelievable privilege and experience. Airways have undergone a drastic evolution in the past decade, with airplanes becoming the most widely used means of transport across the globe. This is primarily because of the higher reliability, least travel time and a better cost effectiveness of the airways over other modes of transport. In addition to that, airports are traditionally considered as the country’s signature monuments. It showcases to an outsider, the first and the last impression of the country. Commercial aviation transports more than four billion passengers annually on airliners. Aviation is a critical part of national economy, […]
