#Parsec unit of measurement

[chillincreative]

True Story: Okay, so before homeroom, I was just getting my Algebra textbooks out of my locker when a jock came up to me and knocked them out of my hands with a football. He greeted me with an unintelligent "what's up, four-eyes?" *sigh* Dear readers, I would be lying if I said that a non-zero fraction of me wasn't peeved off. (Haha, sorry for the double negative... 😏) Anywho, I replied with a succinct "I ask that you 'cut out' this feeble attempt to belittle me because I am strong... up here," and then I tapped my temple with my index and middle finger, but my ultra-wrinkly brain meant nothing to a neanderthal like him. Heh, it was like I was trying to open an executable on Mac because it just wasn't working! I got pummelled with a basketball trying to pick up my Calculus textbook, and in WAY less than 12 parsecs (which I know is a unit of measuring distance, but, well, if you know, then you know). He grabbed me by my Reddit shirt (which I wore way before The Big Bang Theory made it cool), and slammed me into my locker, knocking my Neil deGrasse Tyson "we got a bad*** over here" magnet from off the locker door's interior (which is the perfect coincidence seeing as I'm really quite a bad*** in this interaction). This is where things get interesting: He grabbed a soccer ball (which is a "foot"-ball for any British people who read this blogpost), and was about to "chuck it" at my glasses, but before he could I told him "well, you're just jealous because I'm going to work for Tesla and SpaceX in the future!" And, like I imagine most people of lesser minds would, he ran away crying! I must've rolled a Nat 20 because I've never passed a charisma check that easily before. So, I say hurrah! I humbly submit this as a victory for nerds everywhere! Reblog if you relate!

[twocubes]

the "americans will measure with anything but the metric system" joke but it's about astronomers and astronomical units, parsecs, and the masses of the earth, jupiter, and the sun

[papa-poutine]

I know everyone dunks on George Lucas for writing parsecs as a unit of time when they're actually a unit of measurement but have we considered the more interesting and more fun option (han solo was talking out his ass and doesn't know what a parsec is)

[patronsaintofmistakenidentity]

its 3 am on Christmas day. im tired as fuck. here's a nerd ass thought. even if we throw out Solo for a minute its not that weird for han to have bragged about the millenium falcon making the kessel run in 12 parsecs. we didn't know shit about what the kessel run was when eps 4 5 and 6 came out aside from the fact that its a run, and one could brag about making it in under [insert unit of measurement here.] and since we're talking on a scale of parsecs we know its a long fucken run.

neat thing about racing, probably more so in time (or distance in this case) trials is racing lines - the route you take through curves in the track/course. grip, acceleration, and consequently turning radius at a given speed affect what the optimal racing lines are so your best aren't gonna fully cut the distance of a course down to the minimum if you're going for time but we're in space so we can throw out grip. we've still got acceleration and a less variable turning radius but those are gonna affect our racing lines less than if we were in a car.

so even from the sentence “It’s the ship that made the Kessel Run in less than twelve parsecs!" we could conclude that han had some mad impressive racing lines on that run and wasn't just talking out of his ass

goodnight love y'all Merry Christmas etc

[9th-empress-suravi]

”Palace of Celestial Empress“

(Astrophysics & Astronomy)

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🌠ASTRONOMICAL DISTANCE🌌

Units of measurement of astronomical distances.............

🚀Astronomical Unit :

1 Astronomical Unit (AU) is the mean distance between the Sun and the Earth.

1 AU = 1.496×10^11 m.

Distances in the solar system are measured in this unit.

Another unit is Light year, use for measuring distances between Stars and Galaxies.

🚀Light Year:

1 Light Year (ly) is the distance travelled by light by one year.

1 ly = 9.460×10^15 m. = 6240 AU.

Another unit of the length measurement in astronomy is Parsec.

🚀Parsec :

1 Parsec (pc) is defined as the distance at which the radius of Earth's orbit substend an angle of 1" .

1 pc = 3.262 ly = 2.060×10^5 AU = 3.084×10^16 m.

★*Note that :

1° = 60' and 1' = 60".

Thus, 1" = 1/3600 degree. ★

_Infinity ASTRONOMERICA💫

[schattenhonig]

"Women didn't grow up on Star Wars the way men did."

Yes, that's right. Because when I was a very young Padawan (back in the 90s) and tried to talk to any of the other younglings about our mutual special interest and hyperfixation, I was shunned. Because I was a girl. I knew most of the facts about the Millenium Falcon, my mother (a programmer by trade, even if it was electronic merchant back then 🤨) even explained to me that parsec is a unit to measure distance, not time, but it sounded way cooler, I could quote most of the lines... You get where I'm going with this. It wasn't the fact that I wasn't prepared well enough and equipped with knowledge that made me get excluded from the fandom, which basically existed in back alleys and playgrounds back then. Big Name Fan and leader of the local fan unit was who had the biggest Star Wars toy, or the most. And was a boy obviously, because girls could only be Princess Leia, and still they ignored how badass she is. This was long before I even knew that there was something called the Bechdel Test, and that more female characters could have helped with this view.

So, yeah, I didn't exist in the little world related to Star Wars around my block. Which was as far as I could reach out. So I felt more like Luke being stuck on Tatooine, wanting to escape, be free and cool like Han while I could only navigate social situations like C3PO and the other girls made me feel like I looked like Chewbacca.

[nonfer]

bbc.com/news/articles/c5ypr3vd7x9o

then again

Webb's Stunning Collection of 19 Face-On Spiral Galaxies | Webb (webbtelescope.org)

one of nineteen -> "-  distance to this galaxy remains elusive, -"

APOD: 2019 July 2 - NGC 1566: The Spanish Dancer Spiral Galaxy (nasa.gov) -> "-  billions of stars and situated about 40 million light-years away toward the constellation of the Dolphinfish -"

Webb and Hubble's Views of Spiral Galaxy NGC 1566 | Webb (webbtelescope.org) -> "NGC 1566 is 60 million light-years away in the constellation Dorado."

https://sentinelmission.org/astronomical-units-measurements-glossary/mpc-megaparsec/#I_What_is_a_Megaparsec_Mpc

Parallax - Wikipedia -> "As the Earth orbits the Sun, the position of nearby stars will appear to shift slightly against the more distant background."

Convert parsec [pc] to megaparsec [Mpc] • Length and Distance Converter • Common Unit Converters • Compact Calculator • Online Unit Converters (translatorscafe.com) <- at the moment if you scroll down a few options from "megaparsec" you get "light-year".

Convert Parsec to Light Year (unitconverters.net)

Parallax in astronomy - Wikipedia -> "The word parsec is a portmanteau of "parallax of one second" and was coined by the British astronomer Herbert Hall Turner in 1913 -"

forgetful of

oops ¯\_ (ツ)_/¯

Norm Macdonald does standup about coronavirus pt. 2 (youtube.com)

Norm Macdonald does standup about coronavirus (youtube.com)

[arasunews]

Fundamental Unit - Length

Length is the extent of something between two points. The SI unit of length is metre. Read more.....

Length Length is the extent of something between two points. The SI unit of length is metre. One metre is the distance travelled by light through vacuum in 1/29,97,92,458 second. In order to measure very large distance (distance of astronomical objects) we use the following units. Astronomical unit Light year Parsec Astronomical unit (AU): It is the mean distance of the centre of the Sun…

[hasufin]

So, I have this... kinda long, I need to do a full writeup of it... theory about the Federation, and Earth.

The gist of it is, most of the Federation is basically a big economic and mutual defense pact with very little actual commitment. Usually a Federation starship trucks on up and asks if a planet wants to join. The conditions are basically to not go to war against people you didn’t even know existed two hours ago, not do things you as a species stopped doing (and are kinda embarrassed about)  centuries ago, get involved in a very lucrative trade pact with quite nice terms, and let your citizens join Starfleet if they really wanna. In return you get defense from a military more powerful than you could hope to field yourself, some nice tech you don’t have (you don’t even have to share your own!), and aid in case of a disaster. It’s a sweet deal, mainly because there’s no actual commitment. And notice even founding member like the Vulcans and Andorians don’t regularly join Starfleet and instead maintain their own fleets.

But there’s one except: Earth. Those Humans are All The Fuck In on this. They’re the ones building the Starfleet ships. They’re the ones training all the officers. They’re the ones crewing those ships. Sure, other species do join up, and they’re not unwelcome, but Starfleet ships are Human ships. They’re built for Humans, they use whatever tech Humans have got their hands on, and their principles are human principles.

By the 24th century, Earth has basically directed itself to the Federation. Have you ever considered the scale of the Utopia Planitia shipyards? The Starfleet academy? In one solar system?

I think this reflects two very important, and moderately worrisome, realities:

1) The Federation was formed at a crucial juncture in Earth history: the last World War was just barely out of sight, they had a United Earth, but it was about to come apart at the seams; devolve back to warring nation-states again. But faced with a wide galaxy before them, they found a way to direct those impulses into something constructive. Quark was right about Humans, though.:

They're a wonderful, friendly people, as long as their bellies are full and their holosuites are working. But take away their creature comforts, deprive them of food, sleep, sonic showers, put their lives in jeopardy over an extended period of time and those same friendly, intelligent, wonderful people... will become as nasty and as violent as the most bloodthirsty Klingon. 

If they hadn’t founded, and been the driving force behind, the Federation, Humanity would have either plunged into an even more devastating war - a footnote in the Vulcan Science Acadamy’s records - or they would have launched out into an Empire like the mirror universe or the Confederation of Picard’s alternate timeline. It was good luck and some clever politicking that put them on a less destructive path.

But mark me, the Federation was always about Human Hegemony. They knew they were making a large chunk of the galaxy reliant on one planet. They were okay with that. But...

2) By the 24th Century Earth is coming to the unwelcome conclusion that they just cannot build enough ships, train enough officers, for a Federation-wide fleet. That’s why they latch on to every piece of automation they can, even when it turns out badly. That’s why the Galaxy-class starships were basically big cruise liners and even a tiny-ass Intrepid-class was workable for a years-long cruise. It’s also why the Federation sometimes gets hit pretty hard by powers who should be way outmatched.

What you’re seeing is a Starfleet which is dedicated to consistently taking an exceptionally violent, bloodthirsty race and turning every one of them into the most noble creatures they can manage. Because the alternative is either complete societal implosion or a blast radius measured in parsecs.

Star Trek is so funny. All of starfleet is so aggressively Neutral Good. Every time they're up against something they Always do the noble thing. Every one of these motherfuckers is so ready to jump on the grenade. It's so cute I love them

[erindrifter]

Friends! Did you know that a parsec is an absolutely insane unit of measurement?

OK. So, let's preface this, shall we? In Star Wars: A New Hope, Han Solo boasts that the Millenium Falcon made the Kessel Run in 12 parsecs. This was a frequently poked at statement, as a parsec is a measurement of distance, and not time.

In the movie Solo, this plot hole is fixed, as we see that Kessel has a single tunnel where you can fly through, as the planet is surrounded by a large cloud monster black hole thing that is kinda strange to think about.

Anyways, Han takes a shortcut through this space cloud, so the path that should be 14 parsecs is done in 12. Thus, that line is now accurate.

HOWEVER. A parsec is a very large distance. Firstly, what is a parsec?

Parsec is short for Parallax Second. Parallax refers to the method of using two different points of reference to figure out distance. That makes no sense, so let me explain it through example. Hold your finger up, covering something specific while you close one eye. Now, switch which eye you are using, and your finger should seem to jump to the side. (For example, if you close your left eye and hold up your finger, when you close your right eye and open your left eye, the finger should shift to the right)

Parallax is complicated to explain in text, I am realizing.

So, we try to use this method to measure distance between us and the stars. However, there is no two points on Earth that are far enough apart to see any shifting in the stars, but luckily for us, we can apply some patience. Take one photo of a specific star, wait 6 months, then take a photo of that same star, then compare the two. That 6 month interval puts the Earth on one side of it's orbit around the sun to the other, which is enough distance to get the parallax effect.

So, measuring the amount of movement that the stars make between these two pictures will give us a good measurement of the distance between us and the stars in question. Closer objects will seem to move a lot more than distant ones. (This is exactly how your eyes work, by the way. Your brain is doing these calculations all the time. It's why losing sight out of one eye will reduce or remove your ability to judge depth)

If we were to graph these movements onto a grid, each panel would be 1 Parallax Second. I don't fully understand this part of it, but that's what a parsec is. It's a measurement of distance created by the parallax measured at the sides of Earth's orbit around the sun.

Make sense? No? How about this: One Parsec is 3,292 lightyears.

That's. Insane. The distance between us and Proxima Centauri, the closest star system to us, is less than one parsec.

Now, let's apply a small bit of math to the Kessel Run. The tunnel is said to be 14 parsecs long.

14 x 3,292 = 46,088

So, the Kessel Run is supposedly 46,088 lightyears long. Sure, space is astronomically massive, right? But, is a galaxy?

According to Wookiepedia, the Star Wars galaxy is roughly 120,000 lightyears in diameter, which is significantly larger than our own Milky Way, which is roughly 87,000 lightyears. More math!

120,000 / 46,088 = 2.6 (plus more numbers, but let's round this one)

The Kessel Run is over one third the diameter of the entire galaxy. Even if you squish it up, and scramble it into a pile of spaghetti, that's still MASSIVE.

Basically, that line was probably best considered to be Han using terminology he didn't actually understand, just like George Lucas was when he wrote that line in the first place, because by trying to fix that mistake, now there's even more issues presented by it.

TL:DR

A parsec is such an insane measurement of distance, it's like measuring the length of my apartment in miles.

[truphysics]

Parsec

Introduction The parsec is a unit of length used in astronomy and astrophysics to measure astronomical distances. Due to the vast scale of the universe, conventional units like meters or kilometers are inconvenient for astronomical distances, so larger units like the parsec are used instead. Definition The parsec (pc) is defined as the distance at which one astronomical unit (AU) subtends an…

[rjhamster]

Which of these units is used to measure vast distances?

DAILY EMAIL Apr 19 2023 This quiz will send you on a cosmic tour from protons to galaxies! ScienceQuestion 1 of 15   Which of these units is used to measure vast distances? Joule Newton Parsec Candela Take Quiz Preferences Unsubscribe © 2023, Wise Trivia. All rights reserved.

[allcalculator]

Exponent calculator  Simplify your lengthy calculations

What is the everyday use of exponents?m 

It cannot be very safe for even the most devoted student to comprehend the concept of exponents, the tiny numeral superscripts on numerals. Understanding their importance when applied to everyday math concepts can help alleviate anxiety. When scientific fields use scales like the pH scale or the Richter scale, you can bet you'll find exponents. Both scales are logarithmic, with each number ten-fold higher than the previous one. Chemical scientists, for instance, know that a pH of seven represents 107 and a pH of eight represents 108. Therefore, the substance with a pH of 8 is ten times more basic than that of seven. Geophysicists also use the logarithmic scale. A 7 on the Richter scale represents 107 MW, while an 8 represents 108 MW. On the Richter scale, there is a tenfold increase in earthquake power between a magnitude eight and a magnitude seven earthquake. exponent calculator

What is the point of studying exponents?

Scientists, mathematicians, and economists often encounter big and small numbers. Star Wars fans might recall Han Solo bragging in Episode IV about the Millennium Falcon's ability to reach the Kessel in less than 12 parsecs. In the context of a smuggler's route that involved sections that travelled in hyperspace, length played a crucial role in determining how quickly a ship could travel. The solar system has 31 trillion kilometres in length or 19 trillion miles in length. In reality, a parsec is a unit of length used to measure distances beyond our solar system. The number one trillion (1,000,000,000,000,000,000) is typically written in words or scientific notation, also known as exponential notation, rather than all those zeros. Exponents are used to represent the number of zeros before or after a very small or large number in scientific notation. The exponent of 19 trillion miles is 13, and the base is 10. In this example, the exponent is 13, and the base is 10.

What is Exponent Calculation?

You know what - sometimes the best AllCalculator.net's exponent calculator is the one that is straightforward to use and doesn't even require us to know about the exponent formula at all! Check out the "Formula" box above to learn how to calculate exponents exactly. Any number and exponent can be entered into the Exponent Calculator, and the solution can be found. Enter any number in the calculator, then any exponent, and press the calculate button. Exponents are the number by which a large number must be multiplied. A free online exponent calculator can be used for your website without you downloading the calculator - copy and paste it! The exact exponent calculator you see above is completely free for you to use. For a one-time purchase of $29.99, you can customize the colours, size, and more to fit the site better. 

What is the best way to solve exponents?

The concept of solving an exponent for a positive number is quite simple. You multiply the number by the number of exponents. Finding the exponent of a negative number is more difficult. If you change the exponent to a positive number, you can proceed normally as you would normally in the exponent calculator.

The exponent of the positive value

Its power and base should be determined.

Exponents and bases are written in the same order.

Multiply each base with a multiplication symbol.

Multiply each base with a multiplication symbol.

There is a slight difference between finding the exponent for a positive number and a negative number

Identify the level at which it is raised and the power it reaches.

Change the exponent's sign to positive, and write the reciprocal of the base.

As with the exponent, write the reciprocal of the base.

Multiply the two values by placing a multiplication symbol between them.

[the-voice-of-night-vale]

My first thought is what kind of radiation? (I assume you mean the ionizing kind, but there is also alpha, beta, and gamma particles)

(it's been a hot minute since i've been in a chemistry class and i'm doing some supplementary internet research)

Alpha particles don't penetrate most matter, but they can be very harmful if directly ingested/inhaled/etc. Basically same w Beta, though they can penetrate thin materials like skin and paper, but can be blocked by thin sheets of metal. Gamma particles are more hazards outwardly, because they have the higher penetration power (the kind you need lead, iron, etc. to block)

A curie (which is equal to one thousand millicuries) measures the rate at which a radioactive element emits energy as it decays. 1 curie is equal to 37 billion disintegrations / second (1 gram of radium has a value of 1 curie).

Curies (which i think is an outdated unit and we now use becquerels) are measures of the numbers of atoms disintegrating, but don't tell you a lot about the absorbed dose (which is usually measured in rads (which is apparently ALSO outdated, apparently now they use grays))

Rem is the effective dose, or the potential for damage based on tissue type.

All this to say, 1k millicuries (or 1 curie) of radiation doesn't really tell you how fucked someone might be; it's not measuring for that (sort of like the star wars quote about parsecs as if it's a measurement of time when a parsec is a measurement of distance). It only tells you about the decay rate of the substance, and nothing about the type of radiation it produces, how much of that is absorbed by the drinker, and what effects that might have. some extremely dangerous ionized elements half short half-lives and a high curie count (i.e. they degrade really really fast and lose radioactivity) and some have half-lives of thousands of years (meaning they will stay dangerously radioactive for a long time since the radioactive isotopes take forever to break down into not-scary elements)

tumblrites who know anything about radiation, how dangerous is 1,000 Millicuries in terms easy to understand with almost no knowledge of radiation measurements?

I found this website which does a bunch of conversions but IDK how to read any of the results lol.

[To be clear, this is research for an old book not real life emergency lol.]

pretty much, the question is ,how fucked is someone if they drink 1000 millicuries of radiation ?

[engineeringtrust]

Parsec unit of measurement

#PARSEC UNIT OF MEASUREMENT FULL#

If we have a right angled triangle, then the ratio between the opposite side and the adjacent side of an angle is a function of that angle, which we call the tangent. From this fact we find how similar shapes are defined, because the ratios of their sides are always exactly the same for both shapes no matter what different sizes they are, as long as they have the same number of sides and values for angles). It’s used today in respect to the distances of stars from the solar system, using the Earth’s orbit and the apparent shift in the star’s positions throughout the year.īasic trigonometry states that the ratios of the sides of triangles are a function of the angles of the triangle (in fact, this is true of all shapes, and can be called one of the most basic laws of shapes – as it pretty much defines what “shape” means. It is simply a RATIO that relates apparent motion to distance using trigonometry. Something should stand out to anyone who isn’t geometrically illiterate or desperately trying to save the integrity of their favourite film franchise – that the distance is dependent on the amount you or the object moves, and hence is not really a standard unit of distance (or rather, wouldn’t be used as one by a space-faring civilization or galactic empire). It’s basically a measure of parallax and how it relates to distance. In short, it is the distance an object is from you when it appears to shift its position by 1 arc second over half an arbitrary distance you or the object travel. The word is an abbreviation, which comes from “parallax arc second”. So, let’s first explain what a parsec ACTUALLY is. Yet again, this may sound good to lay people with no real knowledge of astronomy or astrophysics, but to anyone who ACTUALLY knows what a parsec is, this is just as idiotic as the idea that a parsec is a unit of time, and the fan boys who use it only prove that they have no idea what a parsec even is. Therefore, the Millenium Falcon was fast enough to fight against the gravity in this region in order to allow it to take a shorter route that was less than 12 parsecs (or about 39 light years) long.

#PARSEC UNIT OF MEASUREMENT FULL#

Unable to accept a major cock-up in the script of their favourite film, the fan boys went into full mental gymnastic overdrive, trying to come up with why this line could still make sense – talking about a region of black holes that you had to pass through, and that only a fast ship could go a shorter route through this region of space. ( A Parsec is an obscure unit of distance in Astrophysics, equal to 3.26 Light Years. Well, it wasn’t long before people explained that it isn’t a unit of time but a measure of distance, and even Neil DeGrasse Tyson weighed in. Now, it is absolutely obvious that originally George Lucas heard the word “Parsec”, and thought that because it involves the word “sec” (which he correctly thought was short for “second”) then this is a spacey/sciencey sounding unit of time that would be appropriate to drop into a sci-fi film. OK, it’s time to bury this nonsense once and for all.Įver since Star Wars: A New Hope originally came out, there has been a minor scandal surrounding the scene where Han Solo declares that he did the Kessel Run in the Millennium Falcon in “less than 12 parsecs”. Expect heated comments from angry fans who lack the ability to understand reality, or have a sense of humour, below 😉 Find out whether there is any grammatical error in below sentence.In spite of the difficulties / on the way / they enjoyed their / trip to Gangothri.ĩ.Trigger warning: This article explains basic geometry and science, with the unfortunate downside of demonstrating that Star Wars is wrong about something, and that the fan boys don’t know what they’re on about. Find out whether there is any grammatical error in below sentence.There is just not enough / timing in my job to sit around / talking about how we feel / about each other.Ĩ. Find out whether there is any grammatical error in below sentence.Hardly had the / sad news reached her / ears when she / broke into tears.ħ. Find out whether there is any grammatical error in below sentence.We can not handle / this complicated case today / unless full details are not given / to us by now.Ħ. Find out whether there is any grammatical error in below sentence.The customer scarcely had / enough money to pay / to the cashier / at the cash counter.ĥ. Which of the planets is nearest to the earth?Ĥ. Which of the following is the brightest planet?ģ. Which planet is known as 'Morning Star'?Ģ.

[oflgtfol]

thinking about stupid star wars world building again

so what exactly is their system of measurement? the only unit i can recall hearing is a parsec, which is a real unit irl. but like, what about smaller units, like. do they use feet? meters? some fucked up fictional unit? do they use miles or kilometers? what