What Is The Smallest Unit Of Space? The smallest possible size for anything in the universe is the Planck Length, which is 1.6 x10– 35 m across. Is Planck time the smallest unit of time? The Planck time is the time it would take a photon travelling at the speed of light to across a
What Is The Formula Of De Broglie Wavelength? The deBroglie wavelength is defined as follows: lambda = h/mv , where the greek letter lambda represents the wavelength, h is Planck’s contant, m is the particle’s mass and v is its velocity. One could also express mv as the particle’s momentum. What is the de Broglie
What Does A Single Photon Look Like? A photon just looks like a blink of light from a small point. So, when you see a photon (if your eyes are sensitive enough), you see a blip of light. The “size” of a photon is much weirder since photons aren’t “particles” in the traditional macroscopic sense
What Is The Energy Of A Photon Of This Wavelength? Photons have no mass, but they have energy E = hf = hc/λ. Here h = 6.626*10– 34 Js is a universal constant called Planck’s constant. The energy of each photon is inversely proportional to the wavelength of the associated EM wave. What is the
What Is The Photon Frequency Needed To Eject Electrons? The minimum energy required to eject an electron from the surface is called the photoelectric work function. The threshold for this element corresponds to a wavelength of 683 nm. Using this wavelength in the Planck relationship gives a photon energy of 1.82 eV. What is the
Can Light Travel Forever? Light is an electromagnetic wave that doesn’t need a medium to propagate. The strength of the wave, however, can get weaker with the distance, but as long as nothing absorbs it, the light keeps on travelling forever. What is the maximum distance light can travel? Light dissipating In fact there is
Can Light Only Travel So Far? However, light can also travel within some materials, like glass and water. In this case, some light is absorbed and lost as heat, just like sound. So, underwater, or in our atmosphere, light will only travel some finite range (which is different depending on the properties of the material
How Did Einstein Prove That Light Was A Particle? The explanation is very simple: the packets of energy are very tiny, so tiny that you don’t notice the bumps. … Einstein thought “If energy comes in packets, then light could come in packets too!”, he called this packets photons and now everything made sense. What
Can You See Light Travel? “Photons travel about a million times photons travel a million times faster than bullets. So our camera can see photons, or bullets of light traveling through space.” Can you see the path of light? No. It’s traveling through empty space. We can’t see it until it has something to reflect
Can Photons Travel Faster Than Light? Science: Can photons travel ‘faster than light’? LIGHT cannot travel faster than it does in a vacuum. This, at any rate, is what Einstein postulated in 1905. Now, however, a physicist in East Germany claims that photons may be able to break this universal speed limit, known as c.