0
It is a system of units that deleted the confusion in the SI system of units.
According to many scientists; there are some redundancies in the SI system of units. Through an entropy approach that depends on a previous analogy between the electrical, mechanical and thermal fields; it was possible to introduce an approach to a system of units that removes such redundancies. According to the second law of thermodynamics; the temperature was defined as a quality of heat. The followed analogy considers the electrical and magnetic potentials also as qualities of electric and magnetic fields. According to published experimental results; the electric and the magnetic potentials generates electromotive forces that are measured in Volt by Al-Fe thermocouples similar to the E.M.F. generated by the temperature difference in thermocouples. The chemical potential or the concentration gradient generates also an EMF that was measured here by the Al-Fe thermocouple. Such measured E.M.F. in volts is approved as a unique dimensionless scale and unit for measuring the potentials or qualities of the electric and magnetic fields in addition to the thermal and chemical potentials. So; a universal system of units that is based only on three dimensions; E, L, and T, and four fundamental units; Joule, meter, second and volt is introduced in this paper to solve SI redundancies. The energy replaces the mass as a fundamental unit in the introduced US as it plays a dominant role in most of the scientific and engineering fields. The ampere is not included as a fundamental unit since the charge is considered as a form of energy that has the Joule as a fundamental unit. The candela and the mole were also not considered as fundamental units as they can be related to the selected fundamental units by appropriate numbers. The limited number of dimensions in the introduced US simplifies the application of the "π" dimensional theorem to find plausible relations between the main parameters that characterize many physical phenomena as the energy conversions and interactions.
According to SI system; we have the following confusions:
Magnetic
quantity
Electric
quantity
magneto-motive force Amp
electromotive force Volt
magnetic field strength Amp/m
electric field strength V/m
permeability kg m/sec2/Amp2
conductivity Sec3Amp2 /kg/m3
magnetic flux
m2 kg/sec2/Amp
current Amp
magnetic flux density kg/sec2/Amp
current density Amp/m2
reluctance Amp2 / m2 kg / sec2
resistance
m2kg/sec3/Amp2
In the universal system, we have the following homogenity:
Table 2. Electric / Magnetic Fields analog in the US system.
Magnetic
quantity
Electric
quantity
magneto-motive force Volt
electromotive force Volt
magnetic field strength Volt/m
electric field strength V/m
permeability W / m V
Conductivity W / m V
magnetic flux
W
Current W
magnetic flux density W / m2
Current density W / m2
reluctance V / W or Ω
Resistance V / W or Ω
You may find the complete derivation of such system in the following article:
[12] S. Abdelhady, "An Approach to a Universal System of Units" "J. Electromagnetic Analysis & Applications", March, 2010, 2: pp.549-556
Laurie Hammes
Wiki User
∙ 11y agoIt is a system of units that deleted the confusion in the SI system of units.
According to many scientists; there are some redundancies in the SI system of units. Through an entropy approach that depends on a previous analogy between the electrical, mechanical and thermal fields; it was possible to introduce an approach to a system of units that removes such redundancies. According to the second law of thermodynamics; the temperature was defined as a quality of heat. The followed analogy considers the electrical and magnetic potentials also as qualities of electric and magnetic fields. According to published experimental results; the electric and the magnetic potentials generates electromotive forces that are measured in Volt by Al-Fe thermocouples similar to the E.M.F. generated by the temperature difference in thermocouples. The chemical potential or the concentration gradient generates also an EMF that was measured here by the Al-Fe thermocouple. Such measured E.M.F. in volts is approved as a unique dimensionless scale and unit for measuring the potentials or qualities of the electric and magnetic fields in addition to the thermal and chemical potentials. So; a universal system of units that is based only on three dimensions; E, L, and T, and four fundamental units; Joule, meter, second and volt is introduced in this paper to solve SI redundancies. The energy replaces the mass as a fundamental unit in the introduced US as it plays a dominant role in most of the scientific and engineering fields. The ampere is not included as a fundamental unit since the charge is considered as a form of energy that has the Joule as a fundamental unit. The candela and the mole were also not considered as fundamental units as they can be related to the selected fundamental units by appropriate numbers. The limited number of dimensions in the introduced US simplifies the application of the "π" dimensional theorem to find plausible relations between the main parameters that characterize many physical phenomena as the energy conversions and interactions.
According to SI system; we have the following confusions:
Magnetic
quantity
Electric
quantity
magneto-motive force Amp
electromotive force Volt
magnetic field strength Amp/m
electric field strength V/m
permeability kg m/sec2/Amp2
conductivity Sec3Amp2 /kg/m3
magnetic flux
m2 kg/sec2/Amp
current Amp
magnetic flux density kg/sec2/Amp
current density Amp/m2
reluctance Amp2 / m2 kg / sec2
resistance
m2kg/sec3/Amp2
In the universal system, we have the following homogenity:
Table 2. Electric / Magnetic Fields analog in the US system.
Magnetic
quantity
Electric
quantity
magneto-motive force Volt
electromotive force Volt
magnetic field strength Volt/m
electric field strength V/m
permeability W / m V
Conductivity W / m V
magnetic flux
W
Current W
magnetic flux density W / m2
Current density W / m2
reluctance V / W or Ω
Resistance V / W or Ω
You may find the complete derivation of such system in the following article:
[12] S. Abdelhady, "An Approach to a Universal System of Units" "J. Electromagnetic Analysis & Applications", March, 2010, 2: pp.549-556
Add your answer:
Earn +20 pts
What is a system of units used by scientists that is based on units of ten?
Not just used by scientists. Banking and commerce also prefer decimal systems.
What systems of units do scientists use for measurements?
You presuppose that scientists think in the same restricted way as the rest of the population.
What makes SI units special compared to the standard units of other systems?
The SI units are rationally defined, universal, based on a decimal system.
What is an advantage of using SI units?
The SI units are rational, coherent, universal and more simple than the older systems.
What are the units of measurement used by scientists in recording and analyzing their data?
Scientist use the metric system, since it is a universal standard. It makes it easier to compare results worldwide.
3 units of systems?
The 3 units of systems are stucture,processes, and cycles
What problems could occur if some scientists measured objects by using SI units and other scientists measured objects by using other units?
No problems provided they state which units. Most scientists are capable of converting between units.
What are the two most common systems of units?
The two most common systems of units are cgs and SI systems
What are to units that scientists use to measure temperature?
To measure temperature, scientists use:KelvinCelsiusFahrenheit.
Why are standerdized units of measure important to scientists?
Standardized units of measure are important to engineering because if everyone was using different measurement systems, dimensions of different objects and inventions wouldn't be converted correctly from the inventor to other inventors or manufacturers. (Had to be fixed because who ever wrote the originally answer was a a$$ hole)
What are the advantages of metric units?
They are a universal form of measurement
What unit of time is mostly used by scientists?
The official base SI unit of time is the second (s). Since SI units are used as the standards of all respectable science, this is the unit of time most used by true scientists. Although other units of time are used, this is the most commonly used among all scientific fields. Particular fields might use other units more often depending on the particular content that scientists in that field concentrate on.
