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The sonar was first invented to locate underwater hazards such as rocks or icebergs, etc. As time went on, sonars were also used to detect submarines, mines and boats, which really helped Canada during the war, since they had to travel by boat overseas. The sonar locates objects by reflecting the sound waves off of objects. The word sonar stands for SOunds Navigation And Ranging. -
Discovered by John Cunningham Mclennan in 1915. He had studied radioactivity, and had worked on this process with some of his students, and discovered that helium could be extracted form natural gasses. -
Invented by Isaac Newton Lewis, the Lewis light machine gun was a new, improved weapon for the war. It only weighed 12 kilograms which made it much easier to carry and position, and could fire 500-600 rounds per minute. He also invented many other military weapons with quicker fire, and more precise aiming. -
The Canadian National railway, now known as CN for short, was incorporated on June 6 1919. It was, and still is the longest railway system in North America. It connects to three coasts: the Atlantic, the Pacific and the Gulf of Mexico. -
Insulin was discovered at the University of Toronto by a team of doctors led by Sir Frederick G Banting, where his team was able to isolate insulin from dogs, produce diabetes symptoms in the animals, and then provided insulin injections that produced normal blood glucose levels. This discovery brought hope to those with diabetes and was seen as a major step forwards for scientists.
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The variable pitch propeller was invented by Wallace Turnbull. This propeller gives more control to smaller planes and aircrafts. The special thing about this propeller is that it allows the pilots to adjust the blade angles or the pitch during flight. This affects the planes’ thrust and is similar to gearing a bike or car. -
The snowblower was invented by Arthur Sicard. He had worked on this project for about 30 years. They were originally made to attach to the front of trains for when it was too deep for regular snowplows. They ended up attaching to the front of a truck and had a big scooper with a blowing chute where the snow would come out of. -
At the time, the old radios at the time had giant batteries, made loud humming noises, and had bad acid leaks too. Invented by, Eduard S. Rogers Sr, the new Rogers battery less radios only had to be plugged in, tuned and that was it. He wanted to make a radio that used the household electricity to power it, and doing so saves more energy. -
The Robb Wave Organ was designed by Morse Robb in Belleville, Ontario. He wanted to develop organs for the church that would require little maintenance and would save space. He tried to reduce the size of the pieces needed to make the instrument more practical.
