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I knew that the earth was spherical for as long as I can remember... but I do remember a time (until I was 4 or 5) that I believed that people on the other side had to hold on to these rungs when they moved from building to building to keep from falling out into space. I thought the houses were made so that the people walked on what we think of as the ceiling... with their feet facing the sky.
When I was 4 I believed that if you jumped in the aisle of a bus when it was moving the bus would keep going but you would stop which would make you fly out the back window. I believed it until I tried it.
I used to believe that when walking on the beach I wouldn't leave any foot prints if I concentrate all my weight in the top half of my body - I tried and tried but always left foot prints in the sand.
my brother once told me that if you spun yourself around and got dizzy, you would get un-dizzy by going the other way.
I used to think that if you got two buckets and put a foot in each one you could lift yourself up by the handles.
I used to think that if I were to stretch a rubber band too far, it would destroy the earth. And to this day I hate flinging rubber bands.
When I was smaller I always thought that instead of the water filling the glass from the bottom up, it would fill from the top down.
When i was 7 my brother told me that the earth turned at a very high speed so i thought that if i would dig a deep enough hole i could see the earth spinning. I got about 5 feet deep before i gave up.
I was told once (by whom, I can't remember, but it was someone important: teacher, parent, etc.) that the reason we stay on the earth's surface and do not float away into space was because of the earth's spin. I found out much later in life that mass has gravity.
I would rack my brain trying to solve that puzzle. If I spun a plate, everything flew off of it. Only when it sat still did everything stay. It made no sense, but I believed it because I had no other explaination.
My sisters once told me that if you tripped, and then had something sudden happen to attract your attention, you would float. They told me that this was because we are so convinced that the Laws of Gravity are true that therefore they work. But when you are suddenly distracted, you forget about the Laws of Gravity and thus you float. Lets just say that jumping off of stools and ladders and having your sisters throw things at you is not a good idea...
(I believed this for several days until my Dad told me that they got it from some books by Douglas Adams.)
In our laundry room there was a single light bulb hanging from the middle of the ceiling. I noticed that my shadow overtook me everytime I walked from one wall to the opposite one, and that really amazed me.
When I was 5 I thought that if I could run fast enough I could get to the opposite wall before my shadow gets there as well.
I use to believe the speed of sound was the speed of sand and it was measured by how fast you disappeared into quick sand
I used to believe that if I jumped from a height and I had my legs crossed I wouldn't break my legs and I would land unharmed.
when i was very young i asked my dad how a radio works. he explained the principle of radio waves to me, and how they were invisible. he said that you couldn't hear them or see them or even taste them, but i never fully beleived that you couldn't taste them for some reason. i remember getting his transistor radio and putting my mouth on the antenna in hopes of tasting radio waves.
I used to believe that if I picked up a chair while sitting in it, I could levitate and float around. After several failed attempts, I assumed I needed a jump start. It was only when I hit the floor that I realized I was a bit off =)
As a child, I always wondered why the moon changed color as it rose higher in the sky. So in my mind I formulated a solution: it got hotter as it went up, so that (like metal, I thought) it was RED hot when it first appeared on the horizon, then rose higher and heated up to YELLOW, then when it was up the highest it was WHITE hot.
When I was about seven, my best friend and I were completely convinced that the world was held together with Elmer's White Glue in the small bottle. Not the large bottle, we were very clear about that. The small bottle.
I used to believe that thunder was made by the clouds bumping together - lightning was the sparks as they hit. I used to watch the clouds when it was just raining, and wonder why only some clouds made a noise when they collided...
I used to believe that if I was quick enough, I could beat my shadow. I often used to try to hit my table faster than the shadow, sometimes pretending that I wasn't watching it, just to trick it. I never did beat it though...
I remember being swung across the backseat of a car when my dad made a sharp turn. I asked my dad why it happened, and he told me, "It's something called enersha". So I believed that there was an invisible girl named "Enersha" who would occaisonally push me from time to time. I apparently got in trouble at school many times for blaming Enersha when I dropped something.