Electrical Contact Pressure Calculation Use this calculator to estimate contact pressure, pressure class, and an engineering estimate of constriction contact resistance for metal to metal electrical interfaces. Normal Force Force Unit NkNlbf Contact Area Area Unit mm²cm²m²in² Contact Material SilverCopperGoldAluminumTinNickel…
Electric Field Gradient of Electron Pressure Calculator Compute electric field from electron pressure gradient using the relation E = -(1/(e ne)) (dpe/dx). Electron Density (ne) Electron Density Unit m^-3cm^-3 Pressure Gradient (dpe/dx) Pressure Gradient Unit Pa/mPa/cmnPa/km Sign of dpe/dx Positive…
Electric Field Electron Pressure Gradient Calculator Compute electric field from electron pressure gradients using plasma force balance: E = – (1 / (e ne)) (dpe/dx). Electron number density (ne) Density unit m^-3cm^-3 Electron pressure gradient (dpe/dx) Pressure gradient unit Pa/mkPa/mMPa/m…
Elbow Pressure Loss Calculator Estimate pressure drop across piping elbows using minor loss coefficient (K-factor) method. Enter flow, diameter, fluid density, and elbow details to get total pressure loss instantly. Flow Rate Flow Unit m3/hL/sUS gpm Pipe Inside Diameter Diameter…
Astrophysics Calculator Calculate the Mean Free Path of Hydrogen Atoms in Intergalactic Space Estimate how far a hydrogen atom can travel before a collision in extremely diffuse intergalactic environments using number density and collision cross-section. This premium calculator also visualizes…
Ejector Suction Pressure Calculator Estimate suction pressure, vacuum level, and flashing margin using a practical ejector performance model. Motive pressure Discharge pressure Entrainment ratio (suction flow / motive flow) Nozzle efficiency (%) Diffuser efficiency (%) Gas or vapor class Steam…
Egg in Milk Bottle Experiment Pressure Calculator Estimate inside pressure drop, pressure difference, and net force pushing the egg into the bottle. Ambient Pressure (kPa) Temperature Unit Celsius (°C)Fahrenheit (°F) Initial Air Temperature in Bottle Final Air Temperature in Bottle…
Egg in Milk Bottle Experiment Pressure Calculator Estimate internal pressure drop, suction force at the bottle neck, and whether pressure can overcome egg weight plus insertion resistance. Bottle Neck Inner Diameter (cm) Egg Mass (g) Estimated Hot Air Temperature in…
Gas Kinetics Calculator Calculate the Mean Free Path of Helium at 1 atm Estimate how far a helium atom travels between collisions using the kinetic theory formula at atmospheric pressure. Adjust temperature and effective collision diameter for a premium, interactive…
Heat Engine Efficiency Pressure Calculator Estimate ideal Brayton-style thermal efficiency from pressure ratio, then compare with measured plant performance. High Pressure (compressor outlet), Phigh Low Pressure (compressor inlet), Plow Pressure Unit kPabarMPapsi Specific Heat Ratio (gamma = Cp/Cv) Measured Heat…