Board

• Electric quadrupole (by Seonghun Kim)

https://www.geogebra.org/m/t4fsgmzg

• Phase velocity & Group velocity (by Seonghun Kim)

https://www.geogebra.org/m/eusbkkkk 

• Spherical abberation and coma in convex lens (by Seonghun Kim)

https://www.geogebra.org/m/us6ywyda

• Fresnel coefficient (by Seonghun Kim)

TE https://www.geogebra.org/m/t2f68cup

TM https://www.geogebra.org/m/uezete5k 

• Biot-Savart law (by Seonghun Kim)

loop wire https://www.geogebra.org/m/rhj8udmp

line wire https://www.geogebra.org/m/cznkberr

• Complex Permittivity (by Seonghun Kim)

https://www.geogebra.org/m/x3mar4tc

• Crystal Structure (by Seonghun Kim)

Simple Cubic www.geogebra.org/m/txwbjkf7

Body-Centered Cubic https://www.geogebra.org/m/b262cbze

Face-Centered Cubic https://www.geogebra.org/m/zb7b2j9s

Hexagonal Close-Packed https://www.geogebra.org/m/thfafmbb