My planet has a long period orbit. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Doesn't the photon have zero mass? $c=\lambda\nu$, so $\lambda=\frac{c}{\nu}$ and $\Delta E=\frac{hc}{\lambda}$. Were any IBM mainframes ever run multiuser? hλ=mc 2. m =hλ/c 2 ————-(2) h= Planck’s constant(6.62607015×10 −34 Js) λ = wavelength of light. Traditional derivation of photon momentum $p=h/\lambda$ is suspect? Q. Why doesn't De Broglie's wave equation work for photons? rev 2020.11.24.38066, The best answers are voted up and rise to the top, Physics Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. So the wavelength relation works for photons too, you just have to use their momentum. The energy of a single photon of green light of a wavelength of 520 nm has an energy of 2.38 eV. The equation you should be using is. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. How can you determine the polarity of unlabeled magnet? $$\frac{h}{mc} = \lambda$$ m is the mass. Yes a photon has de Broglie wavelength.In 1924,Louis de Broglie proposed that a particle must also act like wave,in silmilar way,wave behave like particles. This wavelength will be in the blue-violet part of the visible light spectrum. Well, as I am learning about quantum physics, one of the first topics I came across was De Broglie's wave equation. "To come back to Earth...it can be five times the force of gravity" - video editor's mistake? The non-basic waveform is then understood as a quantum superposition of states that belong to the chosen basis. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. 4) The question is based on the wrong assumption, see the answer to the question 2. P.S. Required fields are marked *. How to consider rude(?) In other words, a particle of mass $m$ has mass energy $mc^2$, and according to the formulas in my first paragraph, a photon of energy $mc^2$ will have a wavelength $\lambda = hc/mc^2 = h/mc$. 2: The de Broglie wavelength of the electron is 0.26 nm. What does commonwealth mean in US English? The equation you should be using is λ = h p And although photons have zero mass, they do have nonzero momentum p = E / c. “Question closed” notifications experiment results and graduation, MAINTENANCE WARNING: Possible downtime early morning Dec 2/4/9 UTC (8:30PM…. from which we find the momentum, p: p = (2mT) 1/2 = (2 x 9.1 x 10-31 x 1.6 x 10-19 x 2) 1/2 = 7.63 x 10-25 kg m/s. Why can't de Broglie waves be electromagnetic in nature? For what modules is the endomorphism ring a division ring? Why do I need to turn my crankshaft after installing a timing belt? Therefore, won't the wavelength be infinity and the particle nature of the particle non existent? In "Star Trek" (2009), why does one of the Vulcan science ministers state that Spock's application to Starfleet was logical but "unnecessary"? Hi user24298, and welcome to Physics Stack Exchange! How many Types of Multivibrators Are There? Use MathJax to format equations. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A Photon's wavelength is Color, but an Electron's wavelength is a Probability? You deleted your 4 questions, leaving just one, but I hope my answers would still help you. Is it illegal for a police officer to buy lottery tickets? 3) The same way as you may interpret some particular waveform in different bases, like a function of time or a set of sinewave weights, you can interpret photons in different bases. Why were there only 531 electoral votes in the US Presidential Election 2016? Did genesis say the sky is made of water? Do other planets and moons share Earth’s mineral diversity? Why did MacOS Classic choose the colon as a path separator? The system's intermediate states are not "some particles are emitted, and some are not emitted yet", but "system has some intemediate probability to be in the initial state, and some probability to be in the final state". I guess yes, but how come that photons have both a matter wave and an electromagnetic wave but other particles not and that matter and electromagnetic wavelength miraculously match? The frequency, polarisaion, direction, spatial distribution and all such characteristics of each photon would be the same as those of the electromagnetic wave. Why does Slowswift find this remark ironic? site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. 2) Photon emission is not such a kind of process when you get some particles emitted in some interval of time, and you can assume some emission moment within that interval to every particular particle. Although I think, it is still not really okay. I edited your post to use mathjax only to show you, how simple is it. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. As a side effect you can derive that $\lambda = hc/E$ for photons. What is the best way to remove 100% of a software that is not yet installed? MathJax reference. Why is R_t (or R_0) and not doubling time the go-to metric for measuring Covid expansion? Bernoulli equation derivation with examples and applications, Continuity equation derivation in fluid mechanics with applications, Newton’s law of universal gravitation formula, Newton’s First law of Motion Examples in Our Daily Life, Newton’s Second Law Definition and Formula, Newton’s Third Law of Motion Examples in Daily Life, Newton’s three laws of motion with examples and applications, Ampere’s law and its applications in daily life, Formula for ohm’s law with example and problems.

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