📖 what
What is a half-life in physics?
PhysicsNuclear physics
Quick Answer
A half-life is the time it takes for half of a radioactive sample to decay. It is a characteristic property of a specific unstable isotope.
The Full Story
Half-life describes how quickly a radioactive substance decays. It is not a measure of a material’s age, but of the speed of its nuclear transformation. The concept is widely used in nuclear physics, medicine, archaeology, and geology. For example, carbon-14 has a half-life of about 5,730 years, making it useful for dating ancient organic material.
Key Facts
1.Carbon-14 half-life is about 5,730 years
2.Used in radiocarbon dating
3.Applies to specific isotopes
YouTube Angle
Suggested video title for this topic:
"The countdown clock inside unstable atoms"