1844
Elijah Mccoy
invention of the automatic oil cup and the lawn sprinkler. p.38
1942
1972
1987
1998
he developing a car that has four electric motors on each wheel of the car.ballard power systems. p.38
pierre couture
he developing a car that has four electric motors on each wheel of the car.ballard power systems. p.34
Anita luszszak
she developed a pulsating generator that used less energy to generate electrical power than the conventional power generators. p.34
Anik 1 was launched
it was the world's first geostationary communications satellite. p.34
Donald L. hings of british
Columbia inwented the portable transceiver, or walkie-talkie. p.34
1927
Edward samuels rogers
of ontario made the first radio that could be plugged in to a wall outlet. p.34
1924
Sir William
invented a methob of sending
pictures for newspapers over
phone lines. p.34
1906
the world stared to communicate by sending
electronic signals through
the atmosphere. p.33
1900
fessenden
His first message only travelled 2 km. p.33
1878
Cyril Duquet
of Quebec designed a phone receiver to have both an ear and voice piece like the phones of today. p.33
1876
Alexander Graham
a thin sheet of metal , a coil of wire wrapped around a magnet, and a battery to create a telephone. p.32
1786
Does your chart start at a particular event? Add a title for this event, or delete this topic if it is not needed.
Luigi Galvani
he noticed that a spark could make the frog's leg move. p.4
1796
Items or ideas are positioned along the axis. For example, they might be events in a sequence or on a timeline.
Double-click to add a new topic to the map.
Galvani's
use different liquids. He placed these liquids in bowls with pieces of metal. p.5
Left/right axis
Add a legend for the left/right direction in your chart. For example, it might represent time after an event, or steps in a sequence.
