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List Units: A B C D E-F G H-I J-L M N O-P Q-R S T U-Z
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Energy density
Unit Name Symbol SI Equivalent 
· British thermal unit (IT) per cubic foot 
Btu (IT)/ft3  3.72589x104 J/m3 
· British thermal unit (IT) per gallon (UK) 
Btu (IT)/gal (UK)  2.3208x105 J/m3 
· British thermal unit (IT) per gallon (US) 
Btu (IT)/gal (US)  2.78716x105 J/m3 
· joule per cubic meter 
J/m3  1 J/m3 
· kilojoule per cubic meter 
kJ/m3  1000 J/m3 
· megagauss-oersted (MGOe) 
MGOe  7957.75 J/m3 
Surface energy density
Unit Name Symbol SI Equivalent 
· langley (energy) 
  4.185x104 J/m2 
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STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

more publications