Who discovered the electron and what instrument did he use?

If a || b and e || f, what is the value of y ?

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

Draw metallic bonding if two copper