Does your body get all its energy from the sun? What are the particles contained in the sunlight? What produces electromagnetic radiation? Can dark matter be used as an energy source? What type of electromagnetic waves are emitted from the sun?
Alpha particles have two protons and two neutrons. many radioactive materials will emit alpha particles. Beta particles are electrons that are not associated (or attached) to an atom. Beta particles posses a negative charge and have a small mass. Neutrons are neutral and do not have a char...
volcanic emissions also have far-reaching impacts on the atmosphere and air quality. Let's explore the range of air pollutants and particles emitted by volcanoes, exploring their nature, composition, and the implications for the
looking directly at the sun is dangerous). During sunrise and sunset, when the sun is near the horizon, its light travels a longer path through the atmosphere, encountering more air and dust particles.
Solar radiation storms can also emit fast-moving charged particles, which carry a lot of energy and can endanger astronauts and Earth-orbiting spacecraft. During these storms, astronauts on theInternational Space Stationneed to seek shelter and all extravehicular activities are paused. Radiation-sensiti...
So, how close is the sun? And how much space does it take to hold 1.3 million Earths? And while we’re at it: How does the sun emit energy? Did the sun kick-start life on Earth (and the rest of our solar system)? Does the sun rotate? Why does the sun send out solar flares...
Most scientists think that dark matter consists of non-baryonic matter. The leading candidates areWIMPs(weakly interacting massive particles), which are thought to be ten to a hundred times the mass of a proton. However, their weak interactions with "normal" matter make them challenging to detect...
However, dark matter is harder to study than even that because it does not come conveniently clumped into super-dense balls likestarsand black holes. (That would be far too easy.) Instead, the primary theory of dark matter says that it is made of hypothetical particles called Weakly Interacti...
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think ...
One of the most interesting current LCD technologies isquantum dots. These microscopic particles glow a certain color when you give them energy. Many new TVs have thephotoluminescent version, with dots that glow a specific color when hit with light (usually the light from an LED backlight). Th...