(MUSIC)
JOAN CARTAN-HANSEN, HOST: ALBERT
EINSTEIN'S THEORIES HAVE CHANGED
HOW WE VIEW OUR UNIVERSE.
HERE'S A WAY TO UNDERSTAND
EINSTEIN'S THOUGHTS ON GRAVITY.
SO, YOU AND THREE FRIENDS HOLD A
BEDSHEET BY ITS CORNERS.
YOU PLACE A BASKETBALL ON THE
SHEET AND IT ROLLS TO THE
MIDDLE.
THE SHEET IS NO LONGER PERFECTLY
FLAT.
THE BALL CAUSES A BEND.
IN EINSTEIN'S THEORY, THE BALL
IS LIKE THE SUN AND THE SHEET IS
LIKE SPACE.
EINSTEIN BELIEVED THAT MASS
CAUSES SPACE TO BEND.
SO NOW YOU ROLL A TENNIS BALL ON
THE SHEET.
THE TENNIS BALL WILL CIRCLE THE
BASKETBALL HEADING TOWARD IT.
ACCORDING TO EINSTEIN, THAT'S
HOW GRAVITY WORKS.
BIG OBJECTS PULL SMALLER OBJECTS
TOWARD THEM.
EINSTEIN SAYS GRAVITY RESULTS
FROM THE WAY BIG OBJECTS BEND
SPACE.
EINSTEIN ALSO SAID ANYTHING THAT
HAS MASS BENDS SPACE.
SO, YOU BEND SPACE TOO!
FOR MORE INFORMATION ABOUT
GRAVITY, CHECK OUT THE SCIENCE
TREK WEBSITE.
YOU'LL FIND IT AT
IDAHOPTV.ORG/SCIENCE TREK