Gordon England Surface Engineering Forum

TIME
UNIT CONVERSION CALCULATOR

seconds
minutemin
hourh
dayd
weekwk
month (1/12 avg cal year)mo
calendar year (365 day)a
calendar leap year (366 day)a
calendar year (average)a
tropical year (astronomy) a

Time

Definition:
Time is a fundamental quantity which cannot be defined in terms of classical or newtonian quantities. The SI base unit of time is the second and is defined as the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom. This gives the unit second a stable unchanging reference value unlike references from the motion of the sun and planets.

Time can be measured either in "days of fixed length": SI days of 86400 SI seconds, defined by the atomic clocks, or dynamical days defined by the motion of the Moon and planets); or in "natural" days, defined by the rotation of the Earth with respect to the Sun. The duration of the natural day is steadily getting longer as measured by the SI second.

At the epoch J2000 (1 January 2000, 12h TT), the mean tropical year was: 365.242189670 SI days. Due to changes in the precession rate and in the orbit of the Earth, there exists a steady change in the length of the tropical year (about 5 ms/year). This means that in 2000 years time the tropical year will be about 10 seconds shorter.

The calculator uses the SI second, minute and hour. The week is based on a seven SI days. The month is based on 1/12 average calendar year.




CONVERSION CALCULATORS

Convert between Different Units of Measurement

Index of Unit Converters
ACCELERATION
ANGLE
AREA
AREA
DENSITY
DENSITY
DISTANCE
DYNAMIC
VISCOSITY
ENERGY
ENERGY
DENSITY
ENTROPY
FEED RATE
FLOW RATE
FORCE
FUEL
CONSUMPTION
HEAT
CAPACITY
HEAT FLUX
DENSITY
HEAT TRANSFER
COEFFICIENT
IRRADIANCE
KINEMATIC
VISCOSITY
LENGTH
MASS
POWER
PRESSURE
SPECIFIC
ENERGY
SPECIFIC
ENTHALPY
SPECIFIC
ENTROPY
SPECIFIC HEAT
CAPACITY
SPECIFIC
VOLUME
SPEED
TEMPERATURE
THERMAL
CONDUCTIVITY
TIME
TORQUE
VELOCITY
VOLUME
VOLUMETRIC
HEAT CAPACITY
Unit Prefixes
Plasma
Gas Flow
Hardness
MPa - GPa
Computing
Bits and Bytes

To use the measurement conversion calculators simply enter a number value into the desired field and click calculate. All results shown will be equivalent values. Values are given to seven significant figures ( the odd result may show 9's or 0's over running). Values of 10 000 or greater will be displayed in the e-format e.g. 2.3456e7 which equals 2.3456 x 107 or 23 456 000. Values lower than 0.001 will be displayed in the e-format e.g. 2.3456e-5 which equals 2.3456 x 10-5 or 0.000 023456. The calculators require that your browser has java script enabled. View all measurement unit conversion calculators on the same page (may not work with all browsers; requires Iframe).

Si Units:
SI Base Units
SI Derived Units
expressed with special names
expressed in terms of SI base units
expressed in terms in terms of SI units with special names
SI Unit Prefixes
Non-SI Units
accepted by SI
currently accepted by SI
derived CGS units with special names
other non-SI units
Constants
Glossary of Units


Google
 



Gordon England Independent Thermal Spray Coating Consultant
Telephone: +44 (0) 1252 405186
Mobile: 07951 120293   
PLEASE CLICK HERE TO EMAIL


THERMAL SPRAY COATING PAGE INDEX

Alternative Site Recommended for Users of Microsoft Internet Explorer
Homepage
Introducing
Nature of Thermal Spray Coatings
Surface Engineering Forum
Thermal Spray Gun Repair Service * Plasma Consumable Parts * Thermal Spray Powder Supplies

Applications: Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers * HVOF Coating of Paper Making Roll * Abradable Coatings*

Photomicrographs: Plasma Sprayed Coatings * Plasma Sprayed Chromium Oxide Coatings * Plasma Sprayed Chromium Oxide Coatings 2 * Combustion Sprayed Coatings * HVOF WC/Co Thermal Spray Coatings * HVOF WC/CoCr Thermal Spray Coatings * HVOF WC/CrNi Thermal Spray Coatings * HVOF NiCrMo (625) Thermal Spray Coatings * HVOF NiCrMoWFe (HastelloyC) Thermal Spray Coatings * HVOF Chromium Carbide Thermal Spray Coatings * Plasma Sprayed WC/Co Coatings * WC/NiCrBSi Thermal Spray Coatings * Thermal Spray Coatings Rogues Gallery * Thermal Spray Coatings Rogues Gallery 2 * Thermal Spray Coatings on Composite Substrates * Thermal Spray Coatings on Composite Substrates 2 * Effect of Metallographic Preparation Technique on Thermal Spray Coatings * Effect of Thermal Spray Coating Process and Powder Size 1 * Effect of Thermal Spray Process and Powder Size 2 * Thermal Spray Abradable Coatings * Combustion Wire Sprayed Coatings * Arc Sprayed Coatings * Arc Sprayed Coatings 2 * Thermal Spray Ceramic Coatings * HVOF Self-fluxing NiCrBSi Coating (not fused) *

Thermal Spray Processes: Combustion Wire Thermal Spray Process * Combustion Powder Thermal Spray Process * Arc Wire Thermal Spray Process * Plasma Thermal Spray Process * HVOF Thermal Spray Process * Detonation Thermal Spray Process * Plasma Flame Theory * Cold Spray Coating Process *

Wear and Use of Thermal Spray Coatings
Corrosion and Use of Thermal Spray Coatings
Glossary of Thermal Spray and Surface Engineering Terms
Image Directory for Thermal Spray Coatings
Plasma Gas Flow Information
Plasma Gas Flow Correction Calculator
Contact Form
Links to other interesting sites related to thermal spray and surface engineering * Reciprocal Links

Periodic Table of the Elements
SI Units * Calculators for Conversion between Units of Measurement
Hardness Testing
Surface Engineering Message Board Archive
Surface Engineering Message Board Archive Index
Search This Site

© Copyright Gordon England