1.String theory says that indivisible subatomic particles are made of tiny little strings vibrating in a specific pattern. 2.Each vibrational pattern corresponds to a different particle. Electron is nothing but a string vibrating in one pattern, and a proton is a string vibrating in a different pattern. 3.It is just a mathematical concept, there is no experimental proof of String Theory.
1.the Sun appears yellow or orange, it is actually brilliant white. 2.Because of the Earth’s atmosphere, Sun looks yellow and changes colors at sunrise and sunset. 3 The actual color of the Sun can be viewed from space because there are no atmospheric molecules for light to interact with.
You may have heard about jet cars, but what about rocket cars? In contrast to a jet-powered car, a rocket car carries both fuel and oxidizer, which eliminates the need for a compressor and an air inlet, which in turn reduces the total weight and minimize drag.
These cars can run their engines for short durations (<20 seconds), and because of their magnificent thrust-to-weight ratio, they can reach high speed quickly.
2. Solid-Propellant Rocket
The Columbia Space Shuttle was launched with the help of two solid-fuel boosters Image Courtesy: NASA
All older firework rockets were powered by solid engines that use solid propellant. However, there are now new designs, more advanced fuels, and functions with solid propellants. Today, advanced state, solid propellant engines are mostly used in the Delta series booster stages and the Space Shuttle dual booster engines.
Solid propellants can be made of numerous compounds, for example, Black powder (contains charcoal, sulfur and potassium nitrate), Zinc-sulfur, potassium nitrate, and composite propellants based on ammonium nitrate or ammonium perchlorate.
FLICKR On June 10, 1912, Josiah and Sarah Moore were bludgeoned to death inside of their home in Villisca. Their four children—and two friends who were spending the night—were also killed, and to this day, the crime remains a mystery. Their home is considered one of the most haunted houses in the country, and guests are drawn to it. People even pay $400+ to stay for one night.