Рет қаралды 7,131
Song based on Slow Hands by Niall Horan. :)
Reference: Earth Materials by Cornelis Klein: amzn.to/3EEoyGI
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Non-textbook books I recommend:
Oxygen by D. Canfield: amzn.to/3gffbCL
Brief history of Earth by A. Knoll: amzn.to/3w3hC1I
Life on young planet by A. Knoll: amzn.to/2RBMpny
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Your inner fish by N. Shubin: amzn.to/3cpw3Wb
Oxygen by N. Lane: amzn.to/3z4FgwZ
Alien Oceans by K. Hand: amzn.to/3clMx1l
Life's Engines: amzn.to/3w1Nhke
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Lyrics:
We should talk about the crystal systems
There are seven that we should consider
And I’m gonna list
All of them right now, so
Isometric, tetragonal, orthorhombic,
Monoclinic, triclinic and hexagonal, and lastly we have trigonal systems yea these are
The sevens crystal systems
Now let’s talk about axes and angles
Isometric and trigonal both have
Equadistant sides of their unit cell, but
Tetragonal and hexagonal systems have
Two sides of equal distance and one that is not
Equal such that a=b=\c in distance
The other systems,
Orthorhombic, monoclinic
And triclinic have sides that are
Not equal such that
A b and c are all different distances
And that’s it for the axes
Moving on to the angles these
Are equal to 90 degrees
In isometric tetragonal and
orthorhombic systems but
The others are not so simple for
Example, in monoclinic systems angles alpha and
Beta equal 90 degrees but gamma does not
This is similar to hexagonal systems but in these
Gamma is 120 degrees
Lastly, Triclinic and trigonal systems have
Angles that are not equal to 90 degrees, but
In the case of trigonal are equal to each other
But in triclinic are not equal.
I hope you enjoyed listening to this song
Cuz I didn’t feel like making a real lecture
Reference:
Earth Materials by Cornelis Klein www.amazon.com...
Images source:
4.bp.blogspot....