The Student Room Group

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Original post by Elm Tree
Not going school today :woo:


Me too!:five:

I'm gonna go to town and watch epic/star trek with some friends :cool:

I wanna watch the animation :colondollar:
I wonder how dalek's exams are going... Haven't spoken to him in a while :redface:
Original post by L'Evil Fish
I wonder how dalek's exams are going... Haven't spoken to him in a while :redface:


Tbh, I'm glad he hasn't been around :pierre:
Original post by Bude8
Tbh, I'm glad he hasn't been around :pierre:


Apart from his obsession with mentioning his A*s in Lang and Lit in one year, he wasn't too bad... Can't blame him, I mean, he's not exactly had the best life I don't think socially...

Mayne he's socializing!:biggrin:
Original post by L'Evil Fish
Apart from his obsession with mentioning his A*s in Lang and Lit in one year, he wasn't too bad... Can't blame him, I mean, he's not exactly had the best life I don't think socially...

Mayne he's socializing!:biggrin:


Well the world doesn't seem to be ending, I don't think he is.
He was annoying. And naive.
Original post by Bude8
Well the world doesn't seem to be ending, I don't think he is.
He was annoying. And naive.


:colonhash:

Yes, "everybody has their down sides" - llama
Can someone please help me answer this question

Why is a crack in a bone visible on a radiograph (An X-Ray image)?

Thanks :smile:
Original post by PriyaPaul
Can someone please help me answer this question

Why is a crack in a bone visible on a radiograph (An X-Ray image)?

Thanks :smile:


X-rays can travel through tissues and not through bone, so the bone absorbs the x-rays but the fracture won't so will show up darker on the radiograph :smile: have I written enough marks?


Posted from TSR Mobile
Original post by Molly_xox
X-rays can travel through tissues and not through bone, so the bone absorbs the x-rays but the fracture won't so will show up darker on the radiograph :smile: have I written enough marks?


Posted from TSR Mobile



Thanks :biggrin:

I'm so sorry but I need help with another question too. :redface:


Why does a film badge have a plastic case and not a metal case ?
(edited 10 years ago)
Original post by PriyaPaul
Thanks :biggrin:

I'm so sorry but I need help with another question too. :redface:


Why does a film badge have a plastic case and not a metal case ?


A bit vague, but I'd say it's because the plastic is transparent/translucent and can let light through whereas metal is opaque and doesn't let light through.
Original post by PriyaPaul
Thanks :biggrin:

I'm so sorry but I need help with another question too. :redface:


Why does a film badge have a plastic case and not a metal case ?


Oh gosh I don't know :s-smilie: which exam board are you?


Posted from TSR Mobile
Original post by Molly_xox
Oh gosh I don't know :s-smilie: which exam board are you?


Posted from TSR Mobile


AQA :smile:
Original post by Bude8
A bit vague, but I'd say it's because the plastic is transparent/translucent and can let light through whereas metal is opaque and doesn't let light through.


Thanks :smile: But why does this matter..
Original post by PriyaPaul
Thanks :biggrin:

I'm so sorry but I need help with another question too. :redface:


Why does a film badge have a plastic case and not a metal case ?


Film badges used to monitor how much radiation a person has been exposed to?
Original post by Elm Tree
Film badges used to monitor how much radiation a person has been exposed to?



:yes: That's right .
Original post by PriyaPaul
Thanks :smile: But why does this matter..


Do you know how film badges work?
Original post by Bude8
Do you know how film badges work?



yeahh. it tells you how much ionising radiation the person has received.
Original post by PriyaPaul
yeahh. it tells you how much ionising radiation the person has received.


So you've answered your own question :yep:
Original post by PriyaPaul
:yes: That's right .


As film badges are exposed to more radiation, they get darken when they are developed.
Metal can block some radiation such as beta so it will stop the film inside the case from receiving the radiation. When it is developed, it wont turn as dark as it should be (because it has only been exposed to gamma) which means that people may be exposed to more radiation than they think they have been.
(edited 10 years ago)
Original post by Bude8
So you've answered your own question :yep:



Oh right :tongue: Thanks

Original post by Elm Tree
As film badges are exposed to more radiation, they get darken when they are developed.
Metal can block some radiation such as beta so it will stop the film inside the case from receiving the radiation. When it is developed, it wont turn as dark as it should be (because it has only been exposed to gamma) which means that people may be exposed to more radiation than they think they have been.


Thank youu :hugs:

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