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Tyrannosaurus rex Had a Tremendous Bite

Knowledge about ancient animals is going in leaps and bounds. Every month or so something new is discovered. Tyrannosaurus rex , for example, had a bite far stronger than imagined previously. The "Terminator" pig-like Archaeotherium was assumed to have the strongest bite of all. This view has now changed. Tyrannosaurus rex was no wimp. It could take chunks of meat out of living victims. In-depth research was done on the head of the ancient beast. A computer simulation with skeleton and muscles showed a tremendous bite of 1350 kilograms of force. This was at the back of the mouth where the bite was strongest. To put this into perspective, modern crocodiles and alligators have a bite of about 1,200 kilogram. The shark is feared, but it has a bite of only 300 kilograms. Dinosaurs were really frightening animals when all animals were very large. Man would have been out of place in such an environment. With animals having tremendous biting power humans would not ha

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Memorization Is Still Useful at University

It has been said that memorizing answers is not good preparation for university. This is based on the premise that much tertiary work is research and evaluation. But what about exams? Semester examinations can contribute from 10 to 50 per cent of a subject, depending on who creates the "set up" of a course. Lecturers set exams based upon their own knowledge. They can't help themselves. It is like an artist who paints a crowd. On close perusal of the picture you can see many instances of little artists everywhere. In other words painters tend to create images of themselves. University lecturers test students on their own knowledge - they have their own pet areas. Students can benefit from this. They can take a recording device into lectures. Indeed, many institutions record lectures for students who miss them for unforeseen reasons. It is possible to buy devices that play back speech very fast. They have a tone control to normalize the pitch. Students can play lectures ove