Some of them make it into our upper atmosphere, where they collide with atoms—with oxygen and nitrogen atoms. 其中一些进入了我们的高层大气,在那里它们与氧原子和氮原子发生碰撞。 This collision causes the atoms to light up, to glow… different types of atoms glowing different colors. 这种碰撞导...
Hydrogen atoms in a distant galaxy far from Earth also emit this same light, but to an observer on Earth, the light appears to have a wavelength of 4.64 x Does the buildup of electrons in the anode or the cathode generate voltage? Explain. Are Gamma rays electromagnetic waves? Why is ...
Does dark matter move faster than light? What is light's elementary particle? How does dark matter support the Big Bang theory? Is dark matter studied in astrophysics? Does dark matter have atoms? Does dark matter have different particles? How is dark energy created? What does dark energy lo...
4 Some special materials (called semiconductors) can be made to emit light when electricity is sent through them. You may konw that atoms consist of electrons moving around a nucleus(原子核) - just as the plants orbit around our Sun. 5 Electrons can also jump between orbits!A. The science...
How Does the Diode Create Light? To understand this, a bit of background about atoms and photons is required. Light is created from atoms into little packets of energy that can move but contain no mass. When these packets are combined, they form photons--basic units of light. ...
Physical Science 7.3h - Atoms Absorb and Emit Light 08:08 Why Do Like Charges Repel Each Other 02:52 ABC Zoom - Electrons and photons_ absorption and transmission of light 01:52 Introduction to light _ Electronic structure of atoms _ Chemistry _ Khan Academy 09:37 How light is emi...
Stars have many features that can be measured by studying thelightthat they emit: temperature spectrum orof light emitted movement (toward or away from us, rate of spin) absolute magnitude- apparent magnitude of the star if it was located 10 parsecs from Earth ...
Grapheneis the thinnest material on earth, so light that it is actually two-dimensional! However, despite being so thin,we canstillsee graphenewith our naked eyes!Grapheneis the world’s most conductive material. The carbon atoms in graphine delocalise electrons, which allows them to move freel...
Why do hydrogen atoms emit or absorb only discrete amounts of energy? What determines if something is a strong or weak conductor? How does this relate to solubility? How effective nuclear charge can be used to explain phenomena? Why charge density is highest at ...
Explain the mechanism of how light is absorbed by atoms. What effect did you observe when different colored filters were placed atop the solar panel? What does this indicate about different wavelengths of light? How and under what conditions do fluorophores emit light?