90 Pascal = 0.01305339 PSI
Conversion Formula
Unit Information
Pascal
The SI unit of pressure, defined as one newton per square meter. Named after French mathematician and physicist Blaise Pascal, it is the fundamental unit for pressure measurement in the International System of Units.
Psi
Pounds per square inch, a unit of pressure in the imperial system. Widely used in various countries for tire pressure, scuba tank pressure, and many industrial and engineering applications.
Conversion Tips
- Remember to check your decimal places for accuracy.
- This conversion is commonly used in international applications.
- Consider the context when choosing precision levels.
- Double-check calculations for critical applications.
Learn More About Pressure
Scientific Overview
Pressure is the force applied perpendicular to the surface of an object per unit area. It is a scalar quantity that describes how force is distributed over a surface.
Historical Background
The concept of pressure was developed by Evangelista Torricelli, who invented the barometer in 1643. Blaise Pascal further developed pressure principles and the SI unit is named after him.
Real-World Applications
Meteorology
Atmospheric pressure measurements are essential for weather forecasting.
Engineering
Pressure calculations are critical in hydraulic systems and structural design.
Medicine
Blood pressure monitoring is vital for cardiovascular health assessment.
Chemistry
Gas pressure affects reaction rates and equilibrium in chemical processes.
Interesting Facts
- At sea level, atmospheric pressure is about 101.3 kPa (14.7 psi).
- The deepest part of the ocean has pressures over 1000 times atmospheric pressure.
- Tire pressure affects vehicle fuel efficiency and safety.
- The human body can withstand pressure changes through equalization in air spaces.
Key Formulas
Pressure Definition
P = F/AHydrostatic Pressure
P = ρghIdeal Gas Law
PV = nRTPressure Conversion
1 atm = 101.325 kPa