Thursday, September 17, 2015

Interview of Computer My Teacher

Hi everyone... Today I'm supposed to make an article about my computer teacher. So here it is:

My teacher's name is Mr. Widyamukti Wicaksana but we call him Pak Wiwiet. In Nizamia he works as a Computer teacher and great at dealing with computer stuff. Even tough he is a computer teacher he is also a Ghrapic Desinger and a Cartoonist. Here is how he stared the job as a teacher; He Volunteered in Komnas PA w/ kakak Seto., The he teached some non-formal school, then he became a teacher in: Lazuardi, Darul Qur’an, then Nizamia. He has been a teacher since 2005- until now.

This is how he became a teacher in Nizamia:
One day he did cycling and he got lost because he was excited to try a new path/track and he reached Super Indo supermarket. He kept cycling and found a weird blue and yellow building and it was an Elementary school called Nizamia Andalusia “wow there’s a school here” He said. The last name “Andalusia” made him interested, he searched and the school opened a position for teachers and since the school was near his house he applied there.   

Here is some extra things about him:
  1. Sports that he like: Football, Camping, Cycling, Hiking, good defender, and motor sport.
  2. His Age: Born 1987. Age 28 (?)(not so sure).
  3. How he feels working in Nizamia Andalusia: Sometimes he has a bad day when students don’t corporate , but sometimes he likes it.
  4. His Favorite Football Player: Greeme Le Saux (FormerEngland international Player and Chelsea), Paolo Maldini (Former Italian and AC.Milan), A. Del Piero (Former Italian/Jeventus), and Ismed Sofyan (Persija).
  5. His Favorite People in the world: Mom,dad,wife, and baby.
  6. His favorite Food: Ramen, Fried Rice, and potato.
  7. His favorite Dessert: Ice Cream, éclair Where do you live: Mampang 11 
Picture of me, my friends, and My Computer Teacher:



    

Wednesday, September 16, 2015

Measurements Standard Based on International Unit

Measurement Standard Based on International Unit
 The International System of Units (French: Système International d'Unités, SI) is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units. It defines twenty-two named units, and includes many more unnamed coherent derived units. The system also establishes a set of twenty prefixes to the unit names and unit symbols that may be used when specifying multiples and fractions of the units.
The system was published in 1960 as the result of an initiative that started in 1948. It is based on the metre-kilogram-second system of units (MKS) rather than any variant of the centimetre–gram–second system (CGS). SI is intended to be an evolving system, so prefixes and units are created and unit definitions are modified through international agreement as the technology of measurement progresses and the precision of measurements improves. The 25th General Conference on Weights and Measures (CGPM) in 2014, for example, discussed a proposal to change the definition of the kilogram.
History:
The metric system was first implemented during the French Revolution (1790s) with just the metre and kilogram as standards of length and mass respectively. In the 1830s Carl Friedrich Gauss laid the foundations for a coherent system based on length, mass, and time. In the 1860s a group working under the auspices of the British Association for the Advancement of Science formulated the requirement for a coherent system of units with base units and derived units. The inclusion of electrical units into the system was hampered by the customary use of more than one set of units, until 1900 when Giovanni Giorgi identified the need to define one single electrical quantity as a fourth base quantity alongside the original three base quantities.
Base units:
Main article: SI base units
The SI base units are the building blocks of the system and all other units are derived from them. When Maxwell first introduced the concept of a coherent system, he identified three quantities that could be used as base units: mass, length and time. Giorgi later identified the need for an electrical base unit. Theoretically any one of electric current, potential difference, electrical resistance, electrical charge or a number of other quantities could have provided the base unit, with the remaining units then being defined by the laws of physics. In the event, the unit of electric current was chosen for SI. Another three base units (for temperature, substance and luminous intensity) were added later.
SI base units[33]:23[37][38]
Unit
name
Unit
symbol
Definition (incomplete)[n 1]
m
  • Original (1793): 1/10000000 of the meridian through Paris between the North Pole and the Equator.FG
  • Interim (1960): 1650763.73 wavelengths in a vacuum of the radiation corresponding to the transition between the 2p10 and 5d5 quantum levels of the krypton-86 atom.
  • Current (1983): The distance travelled by light in vacuum in 1/299792458 second.
L
kg
  • Original (1793): The grave was defined as being the weight [mass] of one cubic decimetre of pure water at its freezing point.FG
  • Current (1889): The mass of the international prototype kilogram.
M
s
  • Original (Medieval): 1/86400 of a day.
  • Interim (1956): 1/31556925.9747 of the tropical year for 1900 January 0 at 12 hours ephemeris time.
  • Current (1967): The duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.
T
A
  • Original (1881): A tenth of the electromagnetic CGS unit of current. The [CGS] electromagnetic unit of current is that current, flowing in an arc 1 cm long of a circle 1 cm in radius creates a field of one oersted at the centre.[39] IEC
  • Current (1946): The constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 m apart in vacuum, would produce between these conductors a forceequal to 2×10−7 newtons per metre of length.
I
K
Θ
mol
  • Original (1900): The molecular weight of a substance in mass grams.ICAW
  • Current (1967): The amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12.[n 4]
N
cd
  • Original (1946): The value of the new candle is such that the brightness of the full radiator at the temperature of solidification of platinum is 60 new candles per square centimetre.
  • Current (1979): The luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540×1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.
J


Note
  1. Jump up^ Interim definitions are given here only when there has been a significant difference in the definition.
  2. Jump up^ Despite the prefix "kilo-", the kilogram is the base unit of mass. The kilogram, not the gram, is used in the definitions of derived units. Nonetheless, units of mass are named as if the gram were the base unit.
  3. Jump up^ In 1954 the unit of thermodynamic temperature was known as the "degree Kelvin" (symbol °K; "Kelvin" spelt with an upper-case "K"). It was renamed the "kelvin" (symbol "K"; "kelvin" spelt with a lower case "k") in 1967.
  4. Jump up^ When the mole is used, the elementary entities must be specified and may be atoms, molecules, ion,  electrons,  other particles, or specified groups of such particles.
The original definitions of the various base units in the above table were made by the following authorities:
  • FG = French Government
  • IEC = International Electrotechnical Commission.  
  • ICAW = International Committee on Atomic Weight.
All other definitions result from resolutions by either CGPM or the CIPM and are catalogued in the SI Brochure.
Founders:
Metre: John Wilkins             










 
Ampre: André-Marie Ampère  










Kelvin: William Thomson  

                                














 Mole: Amadeo Avogadro   







Named units derived from SI base units:
The derived units in the SI are formed by powers, products or quotients of the base units and are unlimited in number.[22]:103[33]:3 Derived units are associated with derived quantities, for example velocity is a quantity that is derived from the base quantities of time and length, so in SI the derived unit is metres per second (symbol m/s). The dimensions of derived units can be expressed in terms of the dimensions of the base units.
Name
Expressed in
terms of
other SI units
Expressed in
terms of
SI base units
rad
m·m−1
sr
m2·m−2
Hz
s−1
N
kg·m·s−2
Pa
N/m2
kg·m−1·s−2
J
N·m
kg·m2·s−2
W
J/s
kg·m2·s−3
C
s·A
V
W/A
kg·m2·s−3·A−1
F
C/V
kg−1·m−2·s4·A2
Ω
V/A
kg·m2·s−3·A−2
S
A/V
kg−1·m−2·s3·A2
Wb
V·s
kg·m2·s−2·A−1
T
magnetic field strength
Wb/m2
kg·s−2·A−1
H
Wb/A
kg·m2·s−2·A−2
°C
temperature relative to 273.15 K
K
lm
cd·sr
cd
lx
lm/m2
m−2·cd
Bq
radioactivity (decays per unit time)
s−1
Gy
J/kg
m2·s−2
Sv
J/kg
m2·s−2
kat
mol·s−1
Notes
1. The 
radian and steradian, once given special status, are now considered dimensionless derived units.[33]:3
2. The ordering of this table is such that any derived unit is based only on base units or derived units that precede it in the table.

Source: https://en.wikipedia.org/wiki/International_System_of_Units










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