A historian analyzes 960 experiments recorded in early scientific journals. 5/8 were in physics, and 3/5 of those used controlled variables. How many physics experiments used controlled variables?

Thu, 07 May 2026 22:25:59 +0000

Title: Uncovering the Roots of Controlled Inquiry: A Historian Analyzes 960 Early Scientific Experiments A recent comprehensive analysis by a leading historian reveals striking insights into the foundational practices of early scientific experimentation. By reviewing 960 recorded experiments from pioneering scientific journals of the 17th and 18th centuries, the study shines a light on how systematic observation and controlled variables shaped early modern science. The data shows that physics dominated these early records, accounting for 5/8—or 60%—of all experiments. This underscores physics’ central role in the development of empirical methods during this transformative period. Of these physics experiments, 3/5 explicitly employed controlled variables, reflecting a growing commitment to experimental rigor. Calculating the number:
5/8 of 960 = (5 × 960) / 8 = 600 physics experiments.
Of those, 3/5 used controlled variables:
(3 × 600) / 5 = 360 physics experiments incorporated controlled variables.