A Pyramid
a pyramid
His parachute looked a lot like a pyramid -- four triangular sides meeting at a central apex. Click link below to see it!
134
Pyramid
parachute
Leonardo da Vinci conceptualized the parachute around 1485, but he never built a working model during his lifetime. His design was detailed in his notebooks, illustrating a pyramid-shaped canopy made of cloth. Although he sketched the idea, it wasn't until centuries later that a functional parachute was actually constructed based on his designs.
jelly fish.
I guess you mean a Jelly Fish
No parachute, it was a barometric fuse. The parachute spotted by some survivors on the ground was a live telemetry sensor package dropped by the lead aircraft. The actual bomb itself Little Boy had a box shaped fin which acted like an air brake loosely termed the "California Parachute" but it was not a real parachute: rather an air brake to reduce terminal velocity.
Bullet security cameras are not shaped like rifle bullets but are based upon the design of the bullets with similar aerodynamic design being used by both products.
The design developed from, a pyramid shaped pile of dirt, to the step pyramid, to the bent pyramid, to the pyramids of gaze.
Alexander Cummings, not a country, patented the design for a flush toilet first. The S-shaped design that would give rise to the toilet prevented sewer gases from entering buildings. This design would later be modified as a U or J-shaped pipe trap located within plumbing fixtures.