Why end centered lattice is not in cubic crystal system

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20 Replies
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Gamertug
Gamertug7mo ago
look at the angles , you will understand
Weirdo
WeirdoOP7mo ago
?? sorry you would have to breif more
Weirdo
WeirdoOP7mo ago
what angles?
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Weirdo
WeirdoOP7mo ago
this looks good
g-sus
g-sus7mo ago
@Weirdo what chap does this come under
iTeachChem
iTeachChem7mo ago
solid state one of the angles is not 90deg
Weirdo
WeirdoOP7mo ago
no like i meant to say why a end centered Bravais lattice is not defined in cubic like why are there gaps in the braivais lattice some crystal systems have 1 some 2 like i can see it being defined , hence the doubt im confused
Weirdo
WeirdoOP7mo ago
like i tried to draw the lattice
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Weirdo
WeirdoOP7mo ago
and yeah i can locate more of them in the lattice itself
iTeachChem
iTeachChem7mo ago
see it is not a mathematical idea that is expanded into nature, it is the other way around this is what is found in nature due to size of ions that fit so theoretically you can make any lattice but irl the ones that exist are listed there there maybe symmetry and other constraints because of which it may not exist uske liye padhna padega thoda not sure
Weirdo
WeirdoOP7mo ago
hmm alright yeah that makes sense thats reasonable, Thanks sir! abhi ke liye yadh rak leta hu , baadme padhlenge jee ke Baad oh wait sir yeah that point helped me understand it a bit i think like cubic had 3 fold symmetry about a body diagonal
iTeachChem
iTeachChem7mo ago
yea somthing like that
Weirdo
WeirdoOP7mo ago
but if i try to do that for a "end centered cubic system" thats not working
iTeachChem
iTeachChem7mo ago
there are more symmetry elements we dont study it but yea that is one reason
Weirdo
WeirdoOP7mo ago
ahhh thats fair i will remember it thank you so much sir!!
iTeachChem
iTeachChem7mo ago
if you study x ray crystallography you may study it haha it is there a LOT in materials engi most welcome
Weirdo
WeirdoOP7mo ago
!! not in my agenda but will check it out sometime 😆 +solved @iTeachChem
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