Historical biography archive · Updated 2026-11-03

Irwin Ira Shapiro Biography and Timeline

Follow Irwin Ira Shapiro through 4 dated historical records for United States of America.

Irwin Ira Shapiro, historical timeline

A chronological timeline drawn from matching World History Database records.

4Distinct records
1 of 1Page
1964–1968Years on this page

1964

Shapiro Delay

Physicist · Massachusetts Institute of Technology · Science / Astronomy

Predicts gravitational time delay in radar signals passing near the Sun.

Role range: 1929-

Shapiro Time Delay

Physicist · Cambridge Massachusetts · Science / Physics

Predicts a measurable relativistic delay in planetary radar signals.

Role range: 1929-

1965

Radar Relativity Test

Physicist · Massachusetts Institute of Technology · Science / Astronomy

Planetary radar tests general relativity through time delay.

Role range: 1929-

1968

Shapiro Delay

Physicist · Massachusetts Institute of Technology · Science / Astronomy

Presents radar evidence for gravitational time delay near the Sun.

Role range: 1929-

Records, sources and methodology

These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.