Main content Skip to main content Subjects Math by subject Early math Arithmetic Pre-algebra Algebra 1 Geometry Algebra 2 Trigonometry Precalculus Statistics & probability AP Calculus AB AP Calculus BC Multivariable calculus Differential equations Linear algebra Math by grade Kindergarten 1st 2nd 3rd 4th 5th 6th 7th 8th Eureka Math/EngageNY High school Science & engineering Physics AP Physics 1 AP Physics 2 Cosmology & astronomy Chemistry AP Chemistry Organic chemistry Biology AP Biology Health & medicine Electrical engineering Computing Computer programming Computer science Hour of Code Computer animation Arts & humanities World history US history AP US History Art history Grammar Economics & finance Microeconomics Macroeconomics Finance & capital markets Entrepreneurship Test prep SAT MCAT GMAT IIT JEE NCLEX-RN College Admissions Search Donate Login Sign up Search for subjects skills, and videos Physics Quantum Physics Nuclei Mass defect and binding energy Nuclear stability and nuclear equations Types of decay Writing nuclear equations for alpha, beta, and gamma decay Half-life and carbon dating Half-life plot Exponential decay formula proof (can skip, involves calculus) Introduction to exponential decay More exponential decay examples Exponential decay and semi-log plots Current time: 0:00 Total duration: 12:22 Exponential decay formula proof (can skip, involves calculus)