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kittycatlukey · 2 years

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comicabrasions · 2 years

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Now if I can score that or better for my class exams this semester we’ll be good haha

#radiography technologist #radiography #student #college student #medical student #x ray tech #rad tech #review #rad review

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nasa · 2 years

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Why Do X-Ray Mirrors Look So Unusual?

Does the object in this image look like a mirror? Maybe not, but that’s exactly what it is! To be more precise, it’s a set of mirrors that will be used on an X-ray telescope. But why does it look nothing like the mirrors you’re familiar with? To answer that, let’s first take a step back. Let’s talk telescopes.

How does a telescope work?

The basic function of a telescope is to gather and focus light to amplify the light’s source. Astronomers have used telescopes for centuries, and there are a few different designs. Today, most telescopes use curved mirrors that magnify and focus light from distant objects onto your eye, a camera, or some other instrument. The mirrors can be made from a variety of materials, including glass or metal.

Space telescopes like the James Webb and Hubble Space Telescopes use large mirrors to focus light from some of the most distant objects in the sky. However, the mirrors must be tailored for the type and range of light the telescope is going to capture—and X-rays are especially hard to catch.

X-rays versus mirrors

X-rays tend to zip through most things. This is because X-rays have much smaller wavelengths than most other types of light. In fact, X-rays can be smaller than a single atom of almost every element. When an X-ray encounters some surfaces, it can pass right between the atoms!

Doctors use this property of X-rays to take pictures of what’s inside you. They use a beam of X-rays that mostly passes through skin and muscle but is largely blocked by denser materials, like bone. The shadow of what was blocked shows up on the film.

This tendency to pass through things includes most mirrors. If you shoot a beam of X-rays into a standard telescope, most of the light would go right through or be absorbed. The X-rays wouldn’t be focused by the mirror, and we wouldn’t be able to study them.

X-rays can bounce off a specially designed mirror, one turned on its side so that the incoming X-rays arrive almost parallel to the surface and glance off it. At this shallow angle, the space between atoms in the mirror's surface shrinks so much that X-rays can't sneak through. The light bounces off the mirror like a stone skipping on water. This type of mirror is called a grazing incidence mirror.

A metallic onion

Telescope mirrors curve so that all of the incoming light comes to the same place. Mirrors for most telescopes are based on the same 3D shape — a paraboloid. You might remember the parabola from your math classes as the cup-shaped curve. A paraboloid is a 3D version of that, spinning it around the axis, a little like the nose cone of a rocket. This turns out to be a great shape for focusing light at a point.

Mirrors for visible and infrared light and dishes for radio light use the “cup” portion of that paraboloid. For X-ray astronomy, we cut it a little differently to use the wall. Same shape, different piece. The mirrors for visible, infrared, ultraviolet, and radio telescopes look like a gently-curving cup. The X-ray mirror looks like a cylinder with very slightly angled walls.

The image below shows how different the mirrors look. On the left is one of the Chandra X-ray Observatory’s cylindrical mirrors. On the right you can see the gently curved round primary mirror for the Stratospheric Observatory for Infrared Astronomy telescope.

If we use just one grazing incidence mirror in an X-ray telescope, there would be a big hole, as shown above (left). We’d miss a lot of X-rays! Instead, our mirror makers fill in that cylinder with layers and layers of mirrors, like an onion. Then we can collect more of the X-rays that enter the telescope, giving us more light to study.

Nested mirrors like this have been used in many X-ray telescopes. Above is a close-up of the mirrors for an upcoming observatory called the X-ray Imaging and Spectroscopy Mission (XRISM, pronounced “crism”), which is a Japan Aerospace Exploration Agency (JAXA)-led international collaboration between JAXA, NASA, and the European Space Agency (ESA).

The XRISM mirror assembly uses thin, gold-coated mirrors to make them super reflective to X-rays. Each of the two assemblies has 1,624 of these layers packed in them. And each layer is so smooth that the roughest spots rise no more than one millionth of a millimeter.

Why go to all this trouble to collect this elusive light? X-rays are a great way to study the hottest and most energetic areas of the universe! For example, at the centers of certain galaxies, there are black holes that heat up gas, producing all kinds of light. The X-rays can show us light emitted by material just before it falls in.

Stay tuned to NASA Universe on Twitter and Facebook to keep up with the latest on XRISM and other X-ray observatories.

Make sure to follow us on Tumblr for your regular dose of space!

#NASA #spaceblr #astronomy #telescope #universe #astrophysics #XRISM #Chandra #x-ray vision #x-ray #space #technology #tech

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scavengedluxury · 4 months

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SOTE (now Semmelweis University) Pulmonology Clinic, Budapest, 1980. From the Budapest Municipal Photography Company archive.

#budapest #hungary #old tech #x-ray #1980s

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sadasspisces · 9 months

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bc girls with normal jobs still be killing it 💁🏼‍♀️🩻

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ohhgingersnaps · 1 month

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writer priorities: sitting in the urgentcare lobby with pneumonia, scribbling down a bunch of notes on what it's like to get chest x-rays done because you can absolutely use it for a fic

#x-ray tech (with Concern): your doctor should see this immediately. me: look at me and this opportunityyy 🎶#(don't worry this was a week ago and i'm definitely over the pneumonia now!! i just still think it's funny)#ok real talk tho the hanahaki fic? it can actually be done in three chapters. it's gonna be a short one for once i swear #i must not make it longfic. longfic is the time-killer. longfic is the little-death that brings total obliteration etc etc

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thefandomfires · 8 months

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#watcher #ryan beraga #shane madej #X-ray tech #ghost files #y’all I swear it’s always straight men or older couples #this also happens WAY more often than y’all think

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humandisastersquad · 27 days

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4 day long weekend and I feel almost like a human being again instead of a hoard of anxious rats in a trench coat. Can’t wait for this to be completely reversed circa 2 hours into my shift tomorrow

#I’m solo tech meaning I have to deal with a shittonne of pts needing X-rays all by myself #and I bet there’s gonna be a ridiculous amount of walk ins bc of the long weekend #fuck me im gonna Die #job stuff #holy personal post batman

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world-of-advice · 4 months

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theforesteldritch · 10 months

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Explaining to doctors and health care workers that if I’m pregnant, it’ll be with Jesus 2.0 or something, now even more impossible! My friend I do not have the internal organs needed for that, I’d be like the Virgin Mary but intersex.

#intersex #moth rambles #im not Christian but I thought the joke was too funny not to share #It’s fun (sarcastic) knowing more about everything related to my being intersex than most doctors #Like I understand sometimes like the x-ray techs or whatever have to ask that because I have an F marked on whatever they were given #But when I was checking into my surgery for a BIOPSY OF MY GONADS #because I’m am intersex and have CAIS #the nurse asked me if I could be pregnant right after going and reviewing my chart #Like I’m in surgery for something very related to the reason I can’t be pregnant!! If you don’t know what that is pls at least #Google it or something.

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vizreef · 2 years

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Adrian Shoe Fitter, Inc. // Shoe-fitting Fluoroscope // Commercial X-ray Machine + Shoe Card (US, ca. 1938)

#WTF #antique tech #x ray machine #buy 2 pairs free cancer

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comicabrasions · 1 year

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Scheduled my radiology technologist exam!

November 18th

Holy fucking shit. I’m gonna puke from nerves

#rad tech #x ray tech

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thegoodmorningman · 1 year

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My prescription is to have a Good Morning anyway. Every Day!!!

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scavengedluxury · 5 months

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X-Ray examination at Charité University Hospital, Berlin, 1978. From the Budapest Municipal Photography Company archive.

#berlin #ostberlin #ddr #old tech #x ray #1970s

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lex-artis-studios · 9 months

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snake x-rays anyone?

Say hello to Noodle, my almost 19-year-old lavender zigzag corn snake. Last fed 3 weeks ago, and in the last four days or so started getting a firm lump 4" or so cranial to his cloaca. Getting bloated cranial to the lump, yadda yadda, only able to pass a couple dime-sized urates, and only after effort. He's easily exhausted and generally just not feeling good. Been getting warm water soaks nightly to no avail. He has an appointment with his vet on Wednesday. I did these rads today at the clinic I work at, but we work with cats so we have no idea wtf we're seeing or even really how to x-ray a snake :D. Yes he's backed up but the question is whyyyyy and I won't get an answer until Wednesday. Bleh.

#snakeblr #snake #corn snake #x-ray #radiograph #vet #vet tech #veterinary nurse #veterinary medicine #exotic pets #reptiles

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lovesomesys · 6 months

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MEDICAL ADVICE!!!

If you get x-rays in a state/country you do not live in!! ASK FOR A DISC WITH YOUR IMAGING!! Doctors cannot just pull up scans from other places. It could take weeks to get your scans and discs that get mailed get lost All The Time. Ask for your disc, and when you go to get x-rays at the next place, give it to them

#medical stuff #medical advice #med advice from someone who works with doctors #xrays #x ray #imaging #this is for sure in the us but check with your local x ray tech!!#I would imagine its pretty much the same everywhere #broken bones #radiology

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