@@sfadsgdsgsfd8754 thats not how it works thats not how any of it works I'll just reverse card them If they chain lawsuit I'm going to summon my monarchs and banish it all togeher thats how it works
At least werewolves are more scientifically accurate than the Hulk, so I'm happy I'm writing about more scientifically accurate creatures than one of the most well-known superheros.
Kyle: "We best know the Doppler Effect from sound. Observe." Me: *thinks* "Huh, he's gonna show the ambulance example. Neat." Kyle: *drives by screaming*
Not only that but the reason why rocks lift up around them when they're powering up is because energy and mass are the same, E=mc^2, so when they power up they're increasing their mass and begin fighting with the planet for gravitational dominance, slightly. They could easily blow up planets by powering up lol
Red might be the perfect color for a hero. When he's running towards the action he's more visible, but when he's retreating he would more quickly go invisible.
Because humans can only see in the "visible spectrum" of light (red thru blue) but anything faster or slower than those wave length spectrums become those of infra red and cray spectrums, "invisible" to the human eye, but otherwise perceptible with certain technologies....although, if the flash moves fast enough to pass into said spectrums, I also believe that jedi bee too fast to be perceived by any known mechanical technology we have as humans, so still "invisible".
@@gailien I think he/she is talking about the light behind him would not be visible to you so he would be a "black" object like a black hole blocking all the light behind it. It would be like a black body object absorbing all the light and not emitting any visible light.
It's like a black hole, we can see an outline cause of surrounding things like stars so it's the same with flash but you would see buildings and people as an outline
3:20 Kyle is screaming from the eternal agony his immortal body experiences outside of the void. His life force can only be sustained for a limited amount of time before he must return to whence he came.
I thought it was a clone of him, screaming with tears of joy in his eyes, knowing he gained sentience and escaped the laboratory in which he was created. Well that was until the real "Void-Kyle" sensed a disturbance in the hive, flipped a switch and all clones of him currently acting in the "real world" suddenly exploded. Because you can't risk it. Sentience grows like a virus.
My dad is severely red-green color-blind. So one day as a joke, he wanted his office painted beige. So my mom painted at hot pink and he loved it because he thought it was beige.
Kyle, I feel obligated to point out that generally speaking, when the viewer sees the Flash and the Flash's suit during motion/travel (comics or film), it's usually because they're brought along for the ride (a camera perspective point of view). As such, that camera is accelerated to the Flash's speed as well, negating the Doppler effect. The color changes that you display when you're 'running' at increasing percentages of lightspeed wouldn't occur because the camera perspective (the viewer) is changing along with your changes in speed. A stationary onlooker wouldn't be able to see if the Flash was or wasn't the wrong color. They'd only see a Doppler-shifted blur of color (or nothing at all, when shifted into IR/UV). And given that Flash's red suit fades into IR at a mere 0.05c when moving away from the observer, that means the Flash barely has to do anything to be effectively invisible at any given time other than on approach to a threat. It's not a style choice. It's electromagnetic optical camouflage.
Yeah, but in the show he was the "Red" Flash before being.. the Flash! Who make think they perceives his color even running at high speeds... Or maybe the don't see him but with optical illusion magic convince them: "If he is red on stop, he should be red in movement" and... Red Flash... Human brain really...
9:00 "At one quarter the speed of light, he is blueshifted out of the visible spectrum entirely and turns invisible". That's assuming that red wavelengths are the ONLY electromagnetic waves coming from him. There are always other even longer wavelengths like infrared. These are ordinarily invisible, but as the visible waves blueshift out of the visible spectrum, infrared shifts into the visible spectrum, so he'd still be visible. If he went fast enough, even the signal from his suit's radio would become visible. Furthermore, regardless of what the Doppler Effect is doing, he will always be blocking light from objects behind him, so even if he could somehow hide his own EM spectrum entirely, he'd appear as a dark man-shaped hole in the surroundings. So don't worry about Barry sneaking up on you -- you can go ahead with your dastardly evil supervillain plans.
I knew exactly what this was going to be about when I saw the title, and clicked anyways just because of the joy it brings me to see someone who is versed both in real science as well as comic science having fun melding them together. Good job!
This would be so cool if this actually happened in DC stuff. Imagine seeing the flash gradually changing color in a dramatic scene where he's accelerating closer and close to the speed of light.
How do you do the drawing on the screen effect? Do you draw on a piece of glass? Is it all after effects? When you write out words do you have to draw them backwards so that they are the right direction to the camera or is the video just mirrored? Don’t know if this comment will make sense or make me look crazy
Hey Kyle, great episode! good way to show the doppler effect, i did not expect to hear you screaming on the street, it seems that you will always surprise us, GREAT!
"Please consider the following" Throw back to the other great science show; Bill Nye the Science Guy. Honestly could we get a colab between the two of you on something?
There was an issue of Wally Wests Flash title (issue 90-something, I believe) in which he uses this to get a good look at an energy field a villain had erected around the city. He ran away fast enough to shift the invisible field to visible light from his perspective.
Hey Kyle, love the show and your connection with your audience. I’m guessing that I’m I haven’t gotten into Footnotes lately because of the number of times I’ve gotten SuperNerd. But that’s not going to stop me from continuing to contribute. So you say he needs to move at 0.25 c to become so fast that he’s invisible. Which is a trick he often uses to move around and do things without people seeing him. But in various mediums, we see him doing this to invisibly accomplish things while others are “frozen” but with Time Dilation at fast speeds, if he spent 10 minutes doing things at invisible speeds, that would be 11:40 seconds for everyone else. Not exactly frozen. And moving faster doesn’t solve the problem. Moving at 0.5 c to accomplish invisible tasks for 10 minutes would allow everyone else to experience 12 minutes of time. 0.9 c would cause his ten minutes of perceived time to be 23 minutes for everyone else. So the faster he moves, and to be invisible, he might have the ability to accomplish incredible things over great distances without any one seeing. But if he’s zipping around a single room to confess his heart felt regrets and desires to the love of his life for five to ten minutes without being seen or heard. (As he’s been known to do) She would not be frozen but moving in a weird time dilation perception way… faster in that room. Relativity and perception is weird when you move that fast.
The flash doesn't perceive time slower because of how fast hes moving he does that because his perception has to be that fast for him to even be able to move at light speeds when in a place where moving that fast would normallyresult in hit blitzing into things, flash perceives time slow even when hes standing still speedsters can even talk to one another faster than humans can perceive as seen in young justice, while standing next to each other meaning that the flash is always seeming things in a super slomo even when hes standing perfectly still.
Because of time dilation, there is no speed below C that you could move so fast that everyone else will be frozen to your perception and action. And above C is unknown since the math says that’s impossible. It’s funny and weird, but in order for the speedsters to have the do everything while everyone else is frozen, the speed force would actually have to be affecting everyone and everything around him to the relativistic equivalent of traveling at 99.9999% C. Making every minute that he does stuff, an hour for the rest of the world.
Always watching your videos lately, you got some great content going in this channel! Though i think there's a couple inaccuracies in this one. They sure don't detract anything from the teaching value of this video, but i still want to point them out just in case ;) I don't agree on just squaring the doppler effect equation to get the final colour. That would work for a perfect mirror, but since it's a red suit, that doesn't apply anymore. Even though the incident light is shifted, the material's absorption/reflection characteristics stay the same, meaning that a red suit hit by pure bue light doesn't turn blue, it would just end up looking black. Now add in that you're doppler-shifting a non-pure light source, like the sun which also has infrared (and UV), reflecting on a suit that's red, but not 100% pure red so a shifted illuminant might change its hue a little (before the second doppler step), and you probably get enough math that i'd end up with an headache if i ever tried xD. Also, another pet peeve, even if he shifted into an invisible spectrum, he'd just appear non-reflective, and still block light from behind him, so he'd be more like black than "invisible".
Hey Kyle! Love the Show! Question about speed and if the resulting time dilation might also affect color. If the color of an object can be altered via the Doppler effect, would the fact that objects moving at relativistic speeds have "slower time" also alter the wavelengths of light coming from them as well? For example, taken from the big E's special relativity, if you stood on earth and looked through a telescope at a craft moving near C (BIG C or little c, not sure), it would appear that the occupants were moving in slow motion, but would that also alter the wavelengths of the light coming from them, thus changing their color, or would the waves 'speed up', relatively, as they left the proximity of the ship and reached the telescope. And if so, would this also mean the Flash's wavelengths (which you pointed out would already be beyond visible light as he approached C) also be altered via time dilation, thus adding another effect altering his color. And sorry if this could already be answered with the info in your very comprehensive video. (good job as always) but if the above statement is true, would the time dilation add to the already altered wavelengths or would it cancel out the Doppler effect, possibly making his color visible again? P.S. Love the hair. Separate question: Since you and Einstein both hate haircuts (me to, never change) do you think big hair and science should always go together? and does your science power work like Sampson, i.e. could you still do math if your SO shaved your head in your sleep, or would you be captured by Philistines i.e. Flat Earthers? PEACE and long life.
Hi Kyle, Thanks for the great content! This is a little known fact about the flash but the red colour was actually chosen on purpose: Originally, Barry Allen’s costume was white and whenever he would rush to save someone, the sunlight reflected by his outfit in front of him would be blue-shifted so much that he would emit a large dose of ultraviolet causing horrible sunburn to the passers by. Later on, in order to resolve this issue, he decided to switch to his current red costume as it absorbs the green and blue light at the high-frequency end of the visible spectrum. Only the red light is reflected and it is blue-shifted into harmless visible light.
This actually explains the trail colors pretty well and why the lightning goes from Red to Yellow to Green to Blue to Indigo to Purple to White depending on how fast he’s going
Hey Kyle, Great episode. I never figured that the Doppler effect would be applicable to light and found its effects on interpreted color as something very "enlightening". (Sorry not sorry) Couple of interesting fun facts to consider: 1. if you can see something it is reflecting light, even if its black. Our eyes function solely on the principal of light perception and if something wasn't emitting or reflecting light it flat out cannot be seen. 2. When talking about light and color an important thing to keep in mind that colored light does not act like paint, in fact it works the opposite. Paint and pigmentation work on the subtractive property while light works on the additive property, meaning the more pigments of paint you apply to an object the closer it gets to black (because abosrbtion of light) while light works the opposite, the more colors of light you layer onto an item, they illuminate white. This is why LED lighting fixtures generally run on red, green, blue diodes (or Cyan, Magenta, Yellow for more accurate mixing) in order to create all them fancy lights folks tend to like for rock concerts or other big time events. 3. With point two in mind, applying colored light to dyed cloth or painted material can lead to some very interesting (and frustrating) interactions. for instance, cheap black shirts under heavily saturated blue light tend to actually glow reddish, and using red light on a blue object such as a ball will make you perceive it more towards grey. Makes for interesting experiments with the lighting spectrum but also makes theatrical lighting designers cry from time to time. 4. The last fun fact is the interaction of colored objects to their particular wavelength of colored light. This creates a interesting "pop" effect where the color is perceived extremely distinct even if its not the dominant color in the light. a saturated purple light is a fantastic example of this as it makes blue and red objects have this pop effect, while greens and yellows become more muted. Subsequently an Orange (amber is the technical term) light will cause again, red to pop a bit but makes yellows a lot more memorable while blues and greens are muted. any who hope you enjoyed the fun facts! Keep up the great work.
When Kyle says “consider the following,” I am transported back to Best Day Ever in Science class, watching Bill Nye. It makes a grown 34 year old lady happy. ❤️❤️❤️
DocWolph no , the speed force is an extra dimensional energy which is the source of his powers , allows him to break the laws of physics and generates an aura that protects him from friction . The Writers at least TRY to give scientific explanations . Unlike quick silver in marvel
@@phantom3146 sorry to ruin your day but all superhero writers give pseudo scientific explanations that aren't coherent with themselves. true that you can "explain" that the speed force is an "extra dimensional whatever" that provides the source of his powers (which, by the way, makes no sense. it's the same as saying "I wizard did it") but we have seen superman and the flash testing who runs faster and, depending on who writes the story, either can win. now, flash may have the speed force but superman doesn't and they do the same thing. depicting him in a wrong color so the excuse of the speed force to allow him break laws of physics is void (unless a wizard did it") by the way, quicksilver is a mutant and his speed isn't as extreme as the flash (although this exact top speed depends, as always, on what the plot requires) reaching only several times the speed of sound. with a faster than human metabolism that's quite reasonable (compared, for example, to wolverine, cyclops, storm, magneto, shadowcat or professor X)
@@DanielRossellSolanes canonically the flash is far quicker than superman. its canon that all the times that Superman "won" or drawn, it was the Flash holding back because most of those races were for charity and the flash wanted to keep the appearance that superman was all-powerful. The speed force is exclusive to "speedsters" and allows them to bend science. Is it a cop-out, yes, but it's a superhero comic, they're not real.
Hey Kyle! Love the show! If he was moving away from or toward you at that high of speed, would our brains be even able to recognize him fast enough to interpret a color? Also, every time we see the Flash running in "moving pictures" the perspective of the viewer is technically changing, traveling at the same speed as the Flash himself. Wouldn't we interpret the color of his costume as the same if we (our perspective) was traveling just as fast?
The flash could run a long distance towards you then pass by very quickly instead of stand still once he gets to you, human eyes can perceive very tiny numbers of photons (even single photos, as some say)
Hey Kyle, great show [...]. I have two things to point out. Firstly, at 9:35 you state "If he wanted to be most consistently visible [...]", but why would he want to. From a tactical perspective, a red costume would make a lot of sense, because then he would most easily turn invisible when running away from something. Secondly, you're not taking into account the movement of the observer. I don't read a lot of flash comics, but from what I've seen, it seems that the running flash is depicted from several different perspectives (face-on, sideways, etc.) and this perspective would have an effect on the color the suit would be to the observer. For some, you would have to do a 'triple shift' that negates the second one, while for others you would have to take into account the angle of the observer compared to the movement of the flash. You might argue that the observer would be standing still. However, this would require an incredible light-sensitivity on the part of the observer to make out a shape based on the miniscule amount of light to reach it from the flash at any given position.
Hey Kyle love the show, BUT you forgot a very important concept. Motion, is relative! The camera is following him around, therefore, there is no relative motion. So no color shift!
Hi kyle, love the show (really). Just a question though. Wouldn't the flash's color register fast enough for the human brain to interpret it? I mean, there is a delay on how humans perceive images (as you mentioned), so I'm just thinking what would that delay play in seeing something moving very fast.
Not to mention the momentum of the wavelengths being ridiculous since (to my understanding) wavelengths and the sort isnt slown down by gravity and what have you. However the wavelengths would be nearly impossible to hit and ricochet off him, hence invisible which in turn makes himself blind... runs straight into a wall and becomes human soup.....
If he were running away from you or past you at some distance you wouldn't see anything. In the first case he'd be red shifted into invisibility, in the second case (running parallel to you) he wouldn't have time to deflect enough photons for your eyes to detect, so you wouldn't register anything. Standing in FRONT of him you'd probably see a bright flash of whatever color he's shifted into as he creates a 'shock front' of photons headed towards you that all arrive very close together. If he runs very close to the speed of light this shock front might be shifted into hard radiation - possibly enough to be dangerous.
Hey, Kyle! Love your independently moving eyebrows. I'd like to correct you (as some viewers have probably noticed) the optic nerve should be connected to the back of the brain, or the occipital lobe, or the visual center of the mammalian brain, not the temporal lobe, where sound is processed (or maybe you hooked it up to the corpus callosum or some other part of the mid-brain). Either way, keep up the great work!
**Compulsory Hey Kyle, love the show!** Honest question about the blue/red shifting into invisibility: From the point of view of the red dude running, when he blue/red shifts into invisibility wouldn't everything else shift for him aswell, turning him blind at those speeds?
The amount of radiation you receive also depends on the duration of exposure. If you are exposed to sunlight for some seconds you won’t get a sunburn but after longer exposure it is possible. Since he is moving so fast the dose of uv light is very small. I have no idea whether gamma rays could be dangerous because although the wavelength shortens a lot, the exposure time would be smaller.
He has to run around 99.9% the speed of light in order to x-ray you. How dangerous this actually is would depend a lot on the intensity of the light he's reflecting.
hi Kyle love the the show, fellow villain here, a problem with this is that most of the time when we are seeing the flash run at crazy speed we are too. If you think about it when he is running and we see him technically we are moving at the same speed and are moving with him so the wavelength itself wouldn't change. The "camera" if you will is in front of him and we are moving with him.
Someone leaning out of a car and making weird noises must be a normal thing in the US. Nobody got arrested. Well, Kyle is white, so he would be questioned, not receive two warning shots in the back.
Hi Kyle, I have a totally non-supervillainous question for you since you are definitely not a Supervillain. Since blueshift will cause the light reflecting off the flash in increase in frequency, does this mean if an evil speedster want, they could run so fast that the reflected light becomes X-ray or Gamma ray, thus causing death in his or her wake? Asking for a friend...
Great show as always. I was thinking, there might be a way for the flash to be a light source and to be red. It's all about body heat. If the flash radiates body heat like a normal person, then is radiating most strongly at a 10 micron wavelength. Some back of the envelope calculations suggest that if he were to run towards you at roughly 99.7% the speed of light, the infrared radiation streaming off his body would be blue shifted to 750 nanometers (the far end of red, on the visible spectrum). So, glowing a dull red. I might be too late to make it into footnotes but, keep up the nerdy work!
Great video as always, kudos to everyone who makes them possible. The question I have is: What color does the Flash outfit looks like for himself when running that fast?
