Printed textbook model paper
Imagine a newly discovered radioactive element. How can scientists estimate its half-life without waiting thousands of years?
نیا تابکار عنصر دریافت ہو تو سائنس دان ہزاروں سال انتظار کیے بغیر اس کی نصف عمر کا تخمینہ کیسے لگا سکتے ہیں؟
Solution & explanation
Measure activity A and estimate the number of undecayed nuclei N. Since A = λN, infer λ = A/N and T½ = ln2/λ. Correct for detector efficiency and background and report uncertainty.
Independent study material · English-medium textbook p. iv · Original book ↗