And he's no youngster. One day there could be maniac who will fight my dad or God-Forbid worse. I dont like sitting in the same car as my Dads. He will also get me beat up or worse. How do I tell him to stop. He loses his temper if there are people cutting across or lights etc all uncessarily things which dont merit any pshcycal fights. Its truly embarassing too. My dad says if somebodtt starts on him then I should fight too lol, but I got my own problems and I dont want to get beat up just because my dad provokes people. Gosh why does this always have to be.
Ive find 2 resources : 1)in recent years balloons made of metal films have become popular. The manufacturing process of these balloons is very different. They are made from a sandwich of two swatches of mylar—a polyester film—often circular in shape, which are sealed together around the edges. 2)The envelope(in airships) is usually made of a combination of man-made materials: Dacron, polyester, Mylar, and/or Tedlar bonded with Hytrel. The high-tech, weather-resistant plastic film is laminated to a rip-stop polyester fabric. The envelope's fabric also protects against ultraviolet light. Usually the envelope is smaller than the bladder to ensure that the envelope takes the load when the blimp is fully inflated. The bladder is made of a thin leak-resistant polyurethane plastic film.
It isn't affected by gravity. Light travels in a straight line. Gravitational lensing occurs because gravity affects the shape of space, so it's straight that's affected.
Very good question. General relativity gave us the answer. Basically a photon traces out a straight line in spacetime, but around gravity wells, spacetime is distorted (imagine the old rubber sheet analogy) so matter distorts spacetime and it is not the photon that is affected as such, it is the fabric of space and time itself, the medium the photon is moving in. Hope that answers your question.
