[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math


View post   

File: 11 KB, 271x186, comfy.jpg [View same] [iqdb] [saucenao] [google]
10380558 No.10380558 [Reply] [Original]

Was this actually a "discovery" or is all of Einstein's career plagiarized? What does it mean that you can describe light as a wave or a particle? Is there light that is a wave and other light somewhere else that isn't?

>> No.10380877
File: 28 KB, 750x281, EM_spectrum_compare_level1_lg.jpg [View same] [iqdb] [saucenao] [google]
10380877

>>10380558

Not sure what your overall point is but:

>What does it mean that you can describe light as a wave or a particle?

It means there's a relationship between particles and waves, this is important when trying to understand how everything is connected by basic forces. Eienstien's theory of photons helped combine two previously disparate forces (electricity and magnetism) into one electro-magnetic force united by e=mc2. Photos are very small, plausibly massless particles that move energy in both wave-like and particle-like patterns based upon the amount of energy within them.

To be clear: While photons are not electrons, they operate by similar principles. Also to be clear: the relationship between electricity and magnetism was well known and proven before, but there was no theoretical basis for it. Einstein changed that. It was this observation that gave the theoretical proof demonstrating how magnetism and electricity were united as one single force, and in the context of the 20th century it paved the way for nuclear power (wherein particles are shot at an atom to release more particles, aka the photoelectric effect) and later String Theory which is attempting to do the same thing using Gravitons.

>Is there light that is a wave and other light somewhere else that isn't?

X-rays and neutrons shot at uranium inside bombs are forms of "light" that behave as particles, and are hazardous to your health as a result. On the other end of the EM spectrum, radio waves are a form of "light" that behave as waves. The "light" we can see acts like a wave at low frequencies (red, yellow colors) and violent at high frequencies - this is why ultraviolet light can give you a sunburn and can kill bacteria because it destroys cells' abilities to reproduce.

tldr see pic

>> No.10380883

>>10380877

Also just so you know why radiology matters to medicine, because high-energy light can destroy cells ability to reproduce it makes it uniquely effective in treating cancer and other types of diseases that cannot be killed with normal medicine. It's also why chemotherapy is so deliberating, because even the most targeted treatments will affect non-diseased tissue and harm the patient, even if in a very minor way.

>> No.10380884

>>10380558
not plagiarized. in fact at first most physicists thought einstein’s idea was foolish, including Planck (should thought light was only quantized during absorption instead of all the time)

anyhow just read about the photoelectric effect. the light’s color determines the emitted electrons’ energy, not the ligjt’s intensity, so there’s no way to ignore quantization