slower speed of light

how to live every normal day in the fullest, most fulfilling way possible:
  • turn your face to the sky. feel the sun, let the rain fall on your face, embrace the overcast. soak it in.
  • contemplate how lucky you are that the people in your life ended up there.
  • listen to other people’s laughs, expressions of joy. notice their genuine smiles.
  • go somewhere by yourself for a minute and look around. look up from your phone and think that you are here right now, you’re alive and you’ve made it this far and that’s beautiful.
  • step outside and breathe in the air. in, out. and again, but a little slower. remember that life doesn’t always have to move at the speed of light and that’s okay.
  • call your parents, tell them about your day. remember they’re probably thinking about you and missing you.
  • smile at someone new, even if it’s a little scary. they might need it.
  • listen to your favorite songs. bop your head, maybe dance along.
  • listen to a song you used to love. think about who you were when you loved it. think about how you’ve changed.
  • remember you’ve grown a lot in the last year. make a note of how you can grow this year. smile, and love every day.

fadedjade68  asked:

You said that time can be bent warped and move faster depending on speed, correct? I've found that time travel is impossible unless we had a way to move as fast as light or sound; What do you think about that? There was a video I watched about how if someone was watching a truck moving at 50mph with two kids in the back throwing a ball that to the person outside the truck is going 60mph then that iss? I think it was relative time but I cant remember.

In essence, you’re correct. The closer you get to the speed of light, the slower time flows for you (from the point of view of a stationary observer) and the shorter your length becomes. If it were possible to move faster than light, you’d end up going back in time (at least, I believe so). However, it’s impossible to go faster than light (or even reach the speed of light, because we have mass), so it’s a little bit of a moot point.

I’m not quite sure what you mean about the video; were you referring to something similar to this? (below)

If so, velocities don’t add linearly (eg if I run 10mph on a train moving 40 mph, my speed relative to the ground is NOT 50 mph) because if they did, I could be on a train traveling 60% the speed of light, then run at 50% the speed of light relative to the train, and appear to travel 110% the speed of light relative to the ground, which is impossible. Therefore, velocities can’t add linearly. I found this, which may help, but since I haven’t taken a special relativity class I’m not entirely sure how to explain it. (image source):

image source

So, to summarize, time and length are relative depending on how fast you’re traveling, and velocities don’t add linearly. Let me know if you have any follow-up questions!!

Pidge Headcanon, brought to you by @strugglingtoast being a dork:

Pidge gets into the zone often while working and, as Team Voltron discovers, if you talk to her while she’s focused she’ll reply with something completely different than what you’re talking about.

Shiro: How are the updates on the Lions going?

Pidge:  Enrique Peña Nieto was the 57th president of Mexico who served during the period now dubbed as the “Hell Era” of World History.

—–

Hunk: Pidge are you hungry?

Pidge: We need the new capacitors because the voltage is different. The current will be too powerful otherwise - Altean technology is funny like that.

—–

Lance: Pidge have you seen Allura?

Pidge: That won’t work because when we approach the speed of light, the time we experience is slower relative to our surroundings. Wormholes are better.

—–

Team Voltron has installed a board in the lounge where they write all of the things Pidge tells them. Every once in a while, a new fact will be up on it. Pidge still hasn’t noticed.

Week 38: Landscape - Macro @rkcustom1

Shy and I have been into film big time lately.  Actually I’ve been for a while now but Shy is starting to warm up to this new (old) stuff too.  There are various Photoshop/Lightroom filters for digital images that attempt to emulate the look of film.  I’ve done enough of this now though to conclude it’s very difficult to digitally simulate the look of certain films.  Ilford Pan F Plus 50 is one of those films.  My goodness is this stuff smooth.  The 50 is the ISO speed of the film.  That’s one whole light stop slower than the lowest ISO capability of most good DSLRs which usually bottom out at 100.  We spent the day at the Huntington Library near Pasadena yesterday.  This place is a photographers wet dream.  It’s basically a huge botanical garden and museum combination.  So much to see.  Shooting a really slow speed film is a challenge.  I actually set the camera’s ASA (ISO) setting to 40 to help lift the shadows so it was shot even slower than box speed.  The challenge is you are constantly bouncing against the limits of your lens.  It needs so much light for a proper exposure you are constantly struggling with aperture and shutter speed to get sharp images without a tripod.  Tripods aren’t allowed at this place.  The challenge paid off for us though yesterday.  We shot 3 rolls of film between us.  2 rolls of Pan F 50 and I did one roll of Fujichrome Velvia 50 which is a color reversal slide film.  We’ll post more of these in the future on our personal blogs.  We’ve been developing our own film too which is actually very fun once you get the hang of the process.  Don’t expect to get it right the first time.  We certainly didn’t.  We’re doing pretty good now though and our results have been pretty consistent.  The image above was one of many developed in our kitchen with various chemicals you can easily purchase online.  We used our Epson V550 Photo scanner to scan the developed negatives.  The only digital edit to the image above is the addition of the watermark. 

Image captured with a Canon AE1-Program using a Toyo Optics 28mm f/2.8 wide angle/macro lens and an orange contrast filter.  This is a very cool little lens with an extremely small minimum focal distance.  So much so that I had to be careful not to push my forehead into some of those spines above!

- RK

The MBTI types when driving:

ENTP: Won’t be afraid of driving on red lights every now and then as long as no cops are there to see it.

INTP: Actually pretty mellow but they can get feisty.

ENTJ: Has major road rage issues and gets mad at everyone on the road. Most likely to abuse car horn.

INTJ: Slow and steady.

ESTP: Has the most bomb ass playlists going at all times. Somewhat risky.

ISTP: Born with wheels, they love driving.

ESFP: Either wayy too concentrated or wayy not.

ISFP: Pretty normal driver, is aggressive when necessary.

ENFJ: Speedy driver but is somehow safe about it.

INFJ:  Doesn’t look when they back up and hopes for the best.

ENFP: Dancing and singing along to music when driving, will speed up before every pothole because it’s fun seing how high the water can fly.

INFP: Makes everyone in the car nervous because they’re always worried.

ESTJ: Follows the speed limits, won’t let their kids sit in the front until they’re well above the legal age.

ISTJ: Follows the rulebook and is the best designated driver.

ESFJ: Dislikes driving alone, probably on the phone with someone.

ISFJ: Safest driver on earth, least likely to drive on red lights and probably drives slower than the speed limit requires.

anonymous asked:

how exactly are space and time entangled? How could time be defined? Many times I heard people who actually work with physics say that time is just an illusion (didn't feel like they were joking [???]), and then I hear about theories that say the more you'd approach to the speed of light, the slower time would pass. Things such as time doesn't pass to a proton. All I can think of it is Einstein's scene in Rick&Morty screaming I WILL MESS WITH TIME!!!!! I WILL MESS WITH TIME

This is really hard to imagine, but space and time are the same thing (as far as I understand); “space” has 3 dimensions - length, width, height - and time is essentially the 4th dimension. Time is an illusion in the sense that it’s not constant for everyone; time flows at different rates depending on the speed of the observer and whether or not they’re in a gravitational field.

What you’re referring to with speed affecting speed of time is the theory of relativity; you move faster through space and slower through time. And yes, you’re right that photons don’t experience time, since they’re traveling at the speed of light, which is the fastest obtainable speed. Relativity is really crazy and hard to wrap your mind around, so don’t panic if you’re having trouble understanding it. Feel free to hit me up if you’ve got any questions!!

Xenoblade reference: obscure facts hidden in heart-to-hearts

There’s a lot of canon stuff hidden away in heart-to-hearts that many people never see. I suspect some of it’s really cool, or can confirm/deny some specific headcanons, or can just be inspiration for more fanfictions. So I’m going to go through the entire list of H2H’s from the wikia, assume it’s all correct enough, and compile the whole deal right here.

Note that this is “obscure” stuff only, i.e.: you’d never hear of it anywhere else. (That doesn’t mean I’ll ignore something that takes up the entirety of a H2H, or is part of an almost-unmissable one.) It’s sorted by character, mostly. And hopefully I don’t miss anything that I accidentally think is common knowledge or is too easily assumable (poke me if you think I have).

Obviously, there be spoilers, but to be honest once you have Seven in the party you’re golden. The H2Hs themselves are full of spoilers (so maybe don’t look them up yourself), but since I’m ignoring them in favour of the tiny tidbits, there really isn’t much in the way of story relevations.

Well except for the section just after Riki’s, with a single item in the list. Avoid that one, it’s got a much later spoiler.

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PSA: Takes as much time as you need

I would like to give you all a small PSA now.

I do not give a damn how much time you need for your replies.

Seriously, take as much time as you need!

You are not really feeling your muse so you cannot do as many replies as you had hoped? That’s okay.

You only have muse for a specific set of threads or maybe even only one? That is okay.

You are having a huge amount of drafts and you take several days to get through it? That is okay.

You want to dropp a few threads for whatever reason? Maybe because you lost motivation, want to lower your drafts number or what else? That is okay.

We are living in a time, where people always expect from us that we get things done as fast as possible. Please never ever assume that I ask this from you as a roleplayer! Remember, this is a hobby. It is supposed to be fun.

Don’t ever feel stressed out because I end up replying at the speed of light and you seem to be slower then a snail in reverse. (That is meant in good humor). You will be surprised: I often have as many drafts as you do, maybe even more.

You are not alone in the situation of having many drafts. Every roleplayer is there at some point. I can relate to that and I can understand it. Thus I really ask from you only one thing:

Do your roleplays in your pace.

Never feel forced to act fast or reply to as many things as possible. I am very, very patient. I can wait. Moreover don’t ever think that this says something about your quality as a roleplayer. Being slow does not make you a bad roleplayer!

Because I know when you have finished your reply, no matter how long you took for it, it will be your absolute best. Your replys are worth the wait. Because when I finally see them in my dash, they bring a smile on my face as I read what wonders you produced at your own pacing and when you took your time.

Tunnel Vision

My name is Theodore Ajax Wittenburg. I am a professor of astrophysics at Columbia University. You can call Dr. Jax if you like. This story recounts something that happened to me last summer. You see it went like this:

I am a daydreamer. I will ponder a question of physics for hours without really thinking about it. Instead the idea just sort of floats along as if in a dream taking on different shapes and different landscapes. I do this all the time washing my car, mowing the lawn or, as in August of ‘13 eating at the “Dew Drop Inn Bar and Grill” in my home town.

I got to thinking that physics tells us that time is the fourth dimension and that it does not flow uniformly but varies with speed i.e. the closer to light speed the slower time goes. Then it occurred to me that what we think of as an object really isn’t. I mean take a glass water goblet filled with water. We see it in a particular form in a particular place. The shape of a glass on the countertop. Now, bear with me here, the true fact is that the glass is made of primarily of silica from sand. If you saw that glass in four dimensions every single atom of every single molecule would be seen as a filament, a ling string, weaving back over time to the big bang. 

The same goes for a human being. What is a human being? Our bodies are made up of water mainly but other molecules in varying states. However, our molecules are in no way static. They change every millisecond as we breathe in new molecules and breathe out others. Our skin sheds a veritable snowstorm of microscopic cells. In fact there is no clear distinction between where we end and the outer world exists. Human beings, and all living creatures, are a quickly moving blur of ever changing molecular matrices which maintain a rough approximation of a particular shape and “self” identity.

Now, back to that summer afternoon in 2013. I was pondering these things when another thought occurred to me. That is that according to physics the simple act of observing a thing fixes it and makes it real. So, in thinking these things I made them real and this is what happened. I noticed that when I looked straight at something it appeared solid and three dimensional. However, when I looked out of the corner of my eye I began to see solid objects as infinite tunnels of the kind that you see when you put two mirrors together. Only I was seeing them in four dimensions. I could see, not with my eyes really, but through some other part of my consciousness, the interwoven tangled threads of the existence, not of the object, since objects were three dimensional and temporary, but threads of existence all the way back to the beginning of time. I shifted my perspective and could see where they would be in the vastness of future time.

It works with people too. I can see how and when your molecules will part ways and become something else. I know when you die.I also see, in looking at you, that life and consciousness are also visible in four dimensions. I can see that you and I are in essence immortal coils of an organizing force we call life. 

Cheers, love! The cavalry’s here!

I know it’s not pokémon, but Overwatch is an awesome game that I’ve been thinking about a lot lately: and for me, that means analyzing its science! For those concerned, this will just be a one-time thing: the second (out of >500) posts that’s not about pokemon on this blog. I don’t plan to do any more on Overwatch after this. Although, if you want to talk more about Overwatch’s science, feel free to private message me! (That means off-anon)

So let’s do this!

Tracer, real name Lena Oxton, is the speed-based mascot from Blizzard Entertainment’s Overwatch, a first person shooter that was released today! Originally a pilot, Tracer was chosen to flight test a teleporting airplane called Slipstream. However, due to a malfunction of the “teleportation matrix”, the plane (and Tracer with it) disappeared, presumed dead. Yet Tracer reappeared a few months later, now suffering from “chronal dissociation”.  It is described as Tracer’s molecules being “desynchronized from the flow of time”, she couldn’t retain a physical form and disappeared for hours or days at a time.

Until a scientist named Winston (another playable character in the game) invented the chronal accelerator, the glowing device on Tracer’s chest and back. This device anchors Tracer to the present, and also gives her unique abilities, including speeding up, slowing down, and reversing her own time.

This device is what makes Tracer unique and so fun to play. Playing Tracer, you can “Blink” (teleport a short distance) or “Recall” (go back in time 3 seconds, instantly returning to the position, health, and ammo you had at that time). Both are possible through her chronal accelerator. 

Those of you familiar with this blog know that I spend considerable amounts of time thinking about the hows and whys behind video game “science”. And as a physicist, Tracer’s chronal accelerator particularly caught my interest. So how does it work?

Well, let’s start by mimicking Tracer’s ability and going back in time: to 1905 Switzerland, when Einstein published his famous Theory of Relativity. Einstein made two simple assumptions (or “postulates”). 1) That the laws of physics are the same in all inertial reference frames. and 2) The speed of light in a vacuum is the same in all inertial reference frames.

The key here is thinking about these reference frames. What is a reference frame? We don’t normally think about it, but basically all of physics depends on where you’re measuring from, or with comparison to. Imagine you’re sitting on a train, pulling out from the station. Looking out the window, it looks like the platform is moving: you’re just sitting still. From your perspective, it is the platform that is moving, and not the train. To someone on the platform, however, the train (and you on it) are the ones moving. Or maybe you think you’re sitting still right now, reading this on your screen. But to someone floating in outer space looking on, the Earth is actually whipping around the sun at over 67,000 miles per hour (108,000 km/hr) right now. From your perspective, are you moving 67,000 miles per hour? No! That’s what we mean by reference frames. Everything you can observe, measure, or even theorize in physics depends on your reference frame. It’s all relative.

Still, we expect physics to behave the same in all inertial reference frames. The interesting stuff comes up when Einstein’s second postulate, the speed of light, comes into the picture. The idea is that nothing, not even light, can go faster than 3x10^8 m/s (known as c). Let’s go back to the train analogy, since it was one of Einstein’s favorites: If you stand up on the train and start running through the cars towards the engine, from the perspective someone on the platform, you are now moving even faster than the train: the train’s speed + your running speed, to be exact. Extending this to light, however, some problems arise. If you shone a flashlight on the train, you see those photons are moving at speed c. But from the platform person’s perspective, using the same idea, those photons would be moving at the speed of the train + c, which ultimately is faster than c. And that’s impossible. In fact, the person on the platform still sees the photons moving at speed c. So what happened?

Without getting into the math, Einstein discovered that the consequences of this were time dilation and length contraction. This basically means that from the reference frame (perspective) of the light, or anything going near the speed c, time actually passes slower and distances actually become shorter. That is how the speed of light is conserved in all reference frames: even though it should be going faster, it has less time and distance to travel, so in the end, it’s still stuck at c. The faster you go, the more time slows and the more distance contracts. 

Keep in mind that this Special Relativity is only for constant speeds: also called inertial reference frames. For anything speeding up, slowing down, rotating, or otherwise accelerating, Einstein’s General Relativity comes in to play. While its based on the same ideas, General Relativity is much more complicated and gets into changing masses, curving space, and more.

But Special Relativity is really all you need to understand for Tracer–so let’s get back to her, shall we? We know that the chronal accelerator and it’s Blink/Recall abilities only effect Tracer. Therefore these abilities only act on her perspective, her reference frame. Take Blink, for example, which allows Tracer to teleport a short distance. Imagine if, instead of strictly “teleporting”, Tracer simply moved at close to the speed of light. To anyone outside watching, Tracer would practically instantly switch positions, giving the illusion of teleportation. 

Yet the device is called a chronal (time) accelerator, not a Tracer accelerator. Well, I argue that it does both. The chronal accelerator allows Tracer to move at near-light speeds, but from Tracer’s perspective, this would cause time to slow down through the time dilation we talked about. But it doesn’t: when you play as Tracer, you seem to teleport as instantly as everyone else sees you. Therefore, the chronal accelerator both speeds up Tracer, and speeds up Tracer’s sense of time, which counter-acts the time dilation, and lets her experience her movement as if she were in an outside reference frame.

Tracer’s chronal accelerator allows Tracer to move at near-light speeds, while speeding up her sense of time to allow her to experience her movement as an outside observer would.

This, coincidentally, also accounts for the flash of light that Tracer leaves behind when she does this. Remember that regardless off how fast Tracer moves, light moves the same speed. While our eyes could never pick up a person moving that quickly, the light she emits we do see.

Tracer’s “recall” ability, going backwards in time, is a little more difficult to pinpoint. But, according to the math in Special Relativity, it is theoretically possible to slow down time so much that it ends up moving backwards: that happens when you move faster than light. Which, again, isn’t possible. Yet, with what we know about the chronal accelerator so far, it might be…for Tracer.

Again, the chronal accelerator speeds up two things: First, it speeds up Tracer to move at near-light speeds. Second, it speeds up Tracer’s sense of time, such that she experiences her own movements as if from an outside reference frame. So consider this: both Tracer and her sense of time are sped way, way up. She’s going the speed of light in fast-forward mode. With those two things together, Tracer may actually perceive herself as going faster than light: which results in her going backwards in time. 

Naturally, this kind of device would require huge amounts of energy (more than Tony Stark’s chest reactor, that’s for sure), and some kind of physics that obviously hasn’t been invented yet. That aside, other problems such as the whiplash one would experience from this, or the strange symptoms of Tracer’s chronal dissociation, can still be accounted for with our science.

This is where the General Relativity I mentioned comes into play. When Tracer experienced “chronal dissociation”, she often lost her physical form, disappearing for days or months at a time.

In General Relativity, when things accelerate close to the speed of light, mass, energy, and momentum are all the same thing, and often swap between each other. For something going that fast, it will convert mass into energy, or so on. When Tracer was losing her physical form, her mass was being converted into energy, which resulted in her disappearing. Her molecules must have been accelerating, wiggling about at insane speeds that invoked this. The chronal accelerator got that under control; by constantly counter-accelerating Tracer’s molecules, so she can keep her form. As for the whiplash, perhaps the device utilizes her disorder, actually allowing Tracer to disappear while she’s moving/”teleporting”. If she has no mass, she certainly can’t feel whiplash. Alternatively, the third component I mentioned was momentum. A sudden change in momentum is ultimately what causes whiplash: so perhaps the device, instead of converting mass into energy, converts Tracer’s momentum into energy, effectively negating the effects of whiplash. Take your pick!

So that’s what I’ve got on Tracer! Thanks for sticking to the end if you made it this far. Be sure to check out our 200+ pokémon analyses we’ve done if you enjoyed this. Other than that, all I have to say is Cheers, love!

Scientists slow the speed of light

By Kenneth Macdonald

A team of Scottish scientists has made light travel slower than the speed of light. 

They sent photons - individual particles of light - through a special mask. It changed the photons’ shape - and slowed them to less than light speed. 

The photons remained travelling at the lower speed even when they returned to free space. 

The experiment is likely to alter how science looks at light.

Continue Reading

Scientists slow the speed of light

A team of Scottish scientists has made light travel slower than the speed of light.

They sent photons - individual particles of light - through a special mask. It changed the photons’ shape - and slowed them to less than light speed.

The photons remained travelling at the lower speed even when they returned to free space.

The experiment is likely to alter how science looks at light.

Continue Reading.

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Astroquizzical: How Does Gravity Escape From A Black Hole?

“Information doesn’t always travel at the speed of light, though — depending on the environment that the information is traveling through, and the form of that information (which is not always light), the speed of information can proceed at speeds that are much slower than the speed of light. The speed of light in a vacuum seems to be a hard upper limit that nothing can surpass, but if your information is in the form of a compression wave, like sound, then the information travels at the speed of sound in that medium.”

There’s something puzzling about black holes, if you stop to consider it. On the one hand, they’re objects so massive and dense — compacted into such a small region of space — that nothing can escape from it, not even light. That’s the definition of a black hole, and why “black” is in the name. But gravity also moves at the speed of light, and yet the gravitational influence of a black hole has absolutely no problem extending not only beyond the event horizon, but infinite distances out into the abyss of space. Jillian Scudder has the answer to this puzzling conundrum!

Special talk session: Alejandro Jodorowsky & Kyo, Rolling Stones June

Alejandro Jodorowsky, who is currently 85, came to Japan to promote his documentary “Jodorowsky’s Dune” and his first new release since 23 years “The dance of reality”. We present you an interview in the form of a conversation between Jodorowsky and Kyo (DIR EN GREY/sukekiyo), who declared himself a big fan of a director. It became a precious talk session between a superior/isolated master and heretic musician.

Kyo: About 10 years ago I found a black video in my house that had no label. I was cleaning my room at the time, I thought “What the?” - I played the video and that way I saw for the first time your “Holy Mountain”. I was already drawn into it since the opening, I thought “what’s …?!” and was really shocked, before I noticed the movie was finished, my head became a total mess (laugh). Since then I’m a huge fan. I only learnt after a while that it’s a work made before I was even born… that  was another shock.

Alejandro Jodorowsky: Even thought I was involved as a producer with “Holy Mountain”, for about 30 years there were some problems and this film couldn’t be screened. Other producers than me didn’t want to show it to anyone, didn’t want to watch it. Then, I had a video, so I had it dubbed and distributed it as a bootleg. That’s why you also could watch it. It’s good that I did it (laugh).

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“Flowers & Basket” by Milmon F Harrison

Wanted to use this bouquet of flowers once more before throwing them out finally. Still exploring still life photography and working with lighting, slower shutter speeds, etc.

These roses are/were white, but I was struck by how the ambient light, and the light bouncing off the basket(?) gave them a creamy, off-white, slightly warmer tone.

Think I’ll hold on to them a little longer.