Spring (device)

**History of Springs:**
– Simple non-coiled springs used throughout human history
– Bronze Age saw more sophisticated spring devices like tweezers
– Coiled springs appeared in 15th century in door locks
– First spring-powered clocks emerged in the 15th century
– Robert Hooke postulated Hooke’s law in 1676

**Types and Classification of Springs:**
– Spiral torsion spring in alarm clocks
– Battery contacts often have variable springs
– Volute spring allows longer travel under compression
– Various arc springs and systems available
– Tension springs used in reverberation devices
– Tension/extension, compression, torsion, constant, and variable stiffness springs

**Common and Other Types of Springs:**
– Cantilever, coil, hollow tubing, arc, and balance springs
– Flat spring used in vehicle suspensions
– Machined spring, serpentine spring, garter spring, and V-spring
– Belleville washer, constant-force spring, gas spring, ideal spring, and mainspring

**Physics and Energy Dynamics of Springs:**
– Hooke’s law and its application in springs
– Conical springs with variable rates
– Simple Harmonic Motion and energy dynamics in spring-mass systems
– Relationship between extension, tension, and potential energy in springs

**Applications and Uses of Springs:**
– Landmines, pressure-activated mechanisms, clockwork mechanisms
– Torsion springs in vehicle suspension systems
– Wave springs compactly designed for various applications
– Airsoft guns, aerospace, retractable ballpoint pens, buckling spring keyboards, and clockwork devices