Born in 1571 in Weil der Stadt, Germany, to a poor family. Developed strong interest in astronomy from early childhood. Studied at Tübingen University under Maestlin, becoming Chancellor in 1590
Camera lens is an optical assembly used with camera body to create images. Simple convex lens can be improved by adding more optical elements. Lens elements are typically made of glass, with various materials including plastics
Classical mechanics studies forces acting on bodies and particle motion. Thermodynamics examines energy transfer and temperature changes. Electromagnetism investigates electron behavior and light interactions
Normal is a perpendicular vector to a given object. Unit normal vector has length one. Curvature vector is a normal vector with length equal to curvature. Multiplying normal by -1 gives opposite direction
Attenuation is the gradual loss of flux intensity through a medium. Measured in decibels (dBs) and represented by attenuation coefficient. Often follows Beer-Lambert law with exponential path length dependence
Audio devices can be connected via 3.5mm, USB, HDMI, optical, or RCA cables. Headphone jack is green for speakers, pink for microphones, blue for Line-In. Adapters may be needed for different cable types and input combinations. Some devices require power source and may need power source on main unit