Physics Children Demonstrate Gravity Source Jaillissante c1903 Trade Ad Card g

Description

Physics Children Demonstrate Gravity Source Jaillissante c1903 Trade Ad Card g
NOTE:
THESE ARE NOT POSTCARDS - THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE ACTUAL CARD SIZE IS APPROXIMATELY 2 7/8 '' X 4 3/8 '' OR  7 cm. X 11 cm.
THIS IS AN ORIGINAL c1903 TRADE ADVERTISING CARD
CHILDREN'S PHYSICS EXPERIMENTS
GRAVITY WATER PRESSURE
DER KURBIS ALS SPRINGBUNNEN
SOURCE JAILLISSANTE
THERE IS GERMAN TEXT ON THE BACK ABOUT THE FRONT.
NICE DETAIL
A GROUP OF YOUNG BOYS AND GIRLS  IN WONDERFUL
TURN-OF-THE CENTURY PERIOD CLOTHING.
THEY ARE OUTSIDE USING AN ELEVATED PUMPKIN
FILLED WITH WATER TO CREATE A FOUNTAIN.
THESE CARDS MAT AND FRAME VERY WELL!
NOTE:
I HAVE MORE THAN ONE CARD FROM THIS SERIES ON
AND THE IMAGE OF THE BACK OF THE CARD MAY NOT BE
FROM THIS CARD - THE BACKS ARE ALL ALIKE.
THIS CARD IS IN GOOD CONDITION
ESPECIALLY FOR A 100 YEAR OLD CARD!
THE COLORS ARE VERY BRIGHT AND VIBRANT.
IT WAS NEVER GLUED INTO AN ALBUM.
BUT IT WAS IN AN ALBUM WITH CORNER MOUNTS.
THERE MAY BE DEPRESSIONS/FLAWS IN THE CORNERS
WHERE THE ALBUM CORNER MOUNTS WERE.
VERY MILD AGE-TONING (PATINA).
THE CARD SIZE IS APPROX. 2 7/8 '' X 4 3/8 ''
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE
ACTUAL CARD SO YOU CAN SEE THE DETAIL.
THESE CARDS WOULD BE A GREAT ITEM IF YOU ARE INTERESTED IN:
Science, Technology - Technical, Physics, History, School, Teaching, Education, Optics - Optical.
777
Gravitation is the tendency of masses to move toward each other. Weight is a force
caused by gravity equal to the product of the acceleration of gravity and the mass of
the object. Exactly why two masses separated in space have a gravitational attraction
to one another remains largely unknown, despite much research and various theories.
The first mathematical formulation of the theory of gravitation was made by Sir Isaac
Newton and proved astonishingly accurate. He postulated the force of "universal
gravitational attraction".
Newton's theory has now been replaced by Albert Einstein's theory of general
relativity but for most purposes dealing with weak gravitational fields (for example,
sending rockets to the Moon or around the solar system) Newton's formulae are
sufficiently accurate. Steven Weinberg, a Nobel laureate, noted that we would still
build a suspension bridge with Newton's laws.
FROM: en.wikipedia.org/wiki/Gravity
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