On November 25, 1915, Albert Einstein presented his research to the Prussian Academy of Sciences. His theory of general relativity, one of the most revolutionary scientific theories in history, proposes that space and time should be seen as one and the same.

"Albert Einstein's theory of general relativity, which has revolutionized our understanding of the Universe and its most exotic phenomena, is celebrating its centenary this year without taking a wrinkle while none of the many experiments to verify it have still revealed flaw. "

Source: La Presse

Let's take a closer look at the famous physicist Albert Einstein and his famous theory of relativity.


At the end of the activities, the student will be able to:

- Know that Albert Einstein's theory of relativity is celebrating its 100th anniversary;
- Understand this theory and its importance in different fields;
- Find information on Albert Einstein on the Web;
- Discover Newton's theory of universal gravitation and compare it to Einstein's theory.

Suggested Activities

ACTIVITY 1: A Flawless Theory

First, ask students what they know about Albert Einstein. Why is he famous? What did they think he was interested in?

Tell students that his Theory of Relativity is turning 100.

To discover this theory, which has so far revealed no flaws, watch in class this excerpt from the show Découverte.

Then, to check students' understanding, ask the following questions:

- What forms one and the same thing in the theory of relativity?
- What is gravity according to Einstein?
- What prize did Einstein receive in 1921 as a result of his theory of relativity?
- What came from his theory and which was used during the Second World War?
- How does the theory of relativity allow us to explore the solar system?

ACTIVITY 2: Albert Einstein

Before starting the activity, have students search the Internet for pictures of Albert Einstein.

Then, in order to discover this famous physicist, ask them to complete the following diagram using the links in the "Find out more" section.

ACTIVITY 3: Newton vs Einstein

“While Newton explained the orbit of the earth around the sun as the pull exerted by a massive object on a smaller one, Einstein saw our nearest star like a heavy ball on a mattress, the earth rolling on the contours, like a ball in the roulette wheel of a casino. "

Source: The New Economist

As a whole class, watch this animation to understand Newton's theory.

More about the magazine

One hundred years later, Einstein's general relativity has not been denied
Slate.fr, October 18, 2015

The theory of general relativity is 100 years old
Futura-Sciences file, October 8, 2015

Albert Einstein, 1879-1955
Astropolis.fr website file

Albert Einstein
Article from the Larousse encyclopedia

Albert Einstein
Wikipedia article