Physicist: The very short answer is no: darkness is not a wave. There are no waves in the dark for very much the same reason that there’s no surfing (or ocean waves) in Death Valley. Darkness, being an absence of electromagnetic waves (light) has nothing to do any waving.
There are waves in the ocean, because in the ocean there’s stuff to do the waving. Having nothing to wave, deserts are waveless. Darkness doesn’t involve wave because it’s a lack of electromagnetic waves.
If you define the speed of dark to be the speed at which you could find out about someone turning out the lights, it’s exactly the same as the speed of light: 671 million mph, or 2.99 x 108 m/s, or about 1 foot per nanosecond. For example, if the Sun were to suddenly go out (unlikely), then the darkness wouldn’t get to the Earth for a solid 8 minutes.
The somewhat longer answer (that sound like it undermines the short answer, but totally doesn’t) is that “darkness”, while not a wave itself, can be produced by light waves. Light waves, rather than merely being there or not can add and subtract from each other (at each tiny point in space).
You’d think something like light and dark would be an either/or sort of thing, like eggs (for example). But while eggs always add, light (and any other kind of wave) can add or subtract.
So if you’re looking at a particular point in space there can be light waves present, but they may cancel each other out, creating a little dark patch. In this sense light has more in common with money than most “actual” things. You can have positive money (colloquially; “bones”) or you can have negative money or debt (vernacularly; “boned”), and it’s not unless you have neither, or equal amounts of both, that you’re exactly broke.
White=1, Black=-1, Grey=0. Notice that the patches are moving faster in-between the sources.
Light is similar. Correctly prepared light can produce doubly bright or completely dark regions. What’s really slick, is that these regions can move faster than light! There are a lot of effects like this that get a lot of people excited, but before you get too excited; don’t. It has to do with the difference between “phase velocity” and “group velocity”, but the basic idea is that these dark and light patches move faster than light in exactly the same way that the intersection of the blades of a pair of scissors move faster than either blade. There’s an old post that talks about one of the more exceptional examples of this.
Long story short: darkness isn’t a wave itself because it isn’t anything, if it has a speed it’s the same as light speed, and also light is profoundly weird stuff (and not to be taken lightly).
The ocean, desert, basket, and hypnotic pictures are from here, here, here, and here.
Darkness is a wave or not I don’t know about that. But if darkness is not a wave then whats about “Dark Energy”???
What about quantum vacuum fluctuation?
You have got to be kidding. Anyone with common sense knows that darkness is the absence of light, like in a moral sense evil is the absence of goodness. I define “absence” in the dictionary meaning of nonexistence….ka put….nothing or nothingess.
Quantum vacuum fluctuation have broken the symmetry of nature due to which our universe is existing with four fundamental forces of nature…
Quantum Vacuum fluctuation have created the Space-time of our Universe to inflation..!
This is one of the most nebulous and confusing science articles i have read in a long time. It also sounds contradictory in part. I have read this article more than once and am still scratching my head.
Come on professor. You say there it is (light) and there it “ain’t”. You still can not get around the fact that darkness is the ABSENCE of light……….nothing unless you want to include that dark matter stuff that physicists/astronomers are struggling with.
I’ve actually though about this. Everyone thinks we need to be a ble to travel faster than the speed of light to go through space. In actuallity, we need to be able to surpass the speed of dark. Darkness is constant. Always there. Light is fleeting. Turn off the stars and darkness prevails. Darkness is not the absence of light, because darkness exists even in when there is light. Give it enough thought. You’ll see it too.
My guess is that this is a question from a fan of Terry Pratchett. In his satirical Discworld series nothing is faster than dark because no matter how fast light is dark has to be faster to get out of its way. And due to the heavy magical field, light isn’t all that fast, just slightly faster than sound.