Pythagorean Theorem

Trigonometry uses the fact that ratios of pairs of sides of triangles are functions of the angles.  The basis for mensuration of triangles is the right-angled triangle.  The term trigonometry means literally the measurement of triangles.  Trigonometry is a branch of mathematics that developed from simple measurements. A theorem is the most important result in…

Landfill Sites: Selection, Types, Techniques

There is currently much debate on the desirability of landfilling particular wastes, the practicability of alternatives such as waste minimisation or pre-treatment, the extent of waste pre-treatment required, and of the most appropriate landfilling strategies for the final residues. This debate is likely to stimulate significant developments in landfilling methods during the next decade. Current…

Purple Loosestrife: Invasion & Summary

The scene is breathtakingly beautiful; a thick brush of purple flowers blankets Canada’s wetlands.  This blanket silences the expected sounds of the wetland environment, birds chirping, ducks splashing, insects buzzing and animals thriving.  This unnatural silence is disturbing, the favourite flowers that used to litter this landscape are no longer visible, the water that used…