Photography and Film

6 Results:

A Canadian Westinghouse WESSCAM mount on a Bell Model 206 JetRanger helicopter. The fibreglass dome swung out of the way for takeoff and landing. Humphrey Winn, “Canada’s Aircraft Industry: A study in realistic independence.” Flight International, 3 April 1969, 523.

Article

Aviation

I spy with my little stabilised and steered camera eye

Rénald Fortier

Ingenium

Apr 29, 2019

Hello there, my reading friend. How are you today? Good, good. Personally, I feel reasonably well. I have a feeling that the management of the Electronics Division of Canadian Westinghouse Company Limited of Hamilton, Ontario, felt more than reasonably well 50 years ago, on 3 April 1969 to be more precise, when the British weekly magazine Flight International published the article at the core of this week’s peroration. As was / is / will be often the case in matter of science, technology and

Ken Molson sitting on a dock near a seaplane

4 m

Article

Aviation

Ken Molson's photographs detail Canada's aviation history

Adele Torrance

Ingenium

Apr 4, 2019

In honour of Archives Awareness Week (April 1-7), Ingenium is highlighting a few gems taken from our digital collection. Was Ken Molson born with the dream of flying? Or did he acquire the taste, little by little, just as he collected photographs on aviation themes, little by little, over his lifetime? Ken Molson’s personal archives were donated to the Canada Aviation and Space Museum in 1996 and were later certified as Canadian cultural property. The archives cover the entire history of

Make a Thaumatrope

Download activity PDF

The thaumatrope has been tricking our eyes since the 1800s. With this toy, you can make two drawings on separate papers merge into one!

What you need

Image pairs (included below)
Scissors
A glue stick
Adhesive tape
A wooden skewer or straw
Optional: colouring pencils

Safety first!

Adult supervision may be needed when handling scissors.

Make it

Choose and print a pair of pictures.
Optional: colour the pictures.
Cut out the circles.
Use the tape to attach the skewer or straw to the back side of one of the pictures. This will serve as your axis. Make sure that the dotted line is in the centre.
Glue the second picture back-to-back with the first one (the skewer or straw will be between the two pictures). Before gluing them together, make sure that the dotted lines are aligned. The surfaces that you coloured should be facing out.
Leave the glue to dry.

Test it

Hold the thaumatrope between your palms (as far from your face as possible for the best illusion). Rub your hands back and forth together quickly to spin the skewer and see your two pictures become one!

Explain it

The scientific principle behind this toy is known as "persistence of vision." What happens is simple: the pictures change so quickly that the eyes and the brain don't have time to see the individual images. The brain is still registering the first picture when the visual information from the second one arrives. As a result, the brain mixes the two pictures to make one single image!

Observe it

You might be surprised to find that the principles behind the thaumatrope are the same ones that have led us to create animated films! By creating still drawings which change quickly from one to another, the illusion of motion is created. This is because the previous drawing, or frame, persists for just long enough to make the transition seamless.