SI-susteem

Tekst uub Oomrang

Det SI-susteem (faan't fransoosk : S ysteme i nternational d’unites ) as en internatjunaal ferianboorang for fusikaalisk miaten. Hat haa det " MKS-susteem " (efter: M eeter- K ilogram- S ekund) ufliaset.

SI grunjmiaten [ Bewerke | Kweltekst bewerke ]

Miat an Dimenjuun	Miat	Dimenjuun	Ianhaid	Tiaken	Beskriiwang faan't ianhaid
Lengde	l	L	Meeter	m	Lengde faan di wai, di det laacht uun ¹? _299.792.458 Sekund brukt. ^{[B 1]}
Mase	m	M	Kilogram	kg	At Kilogram as det miat faan't "urkilogram".
Tidj	t	T	Sekund	s	Hinget tuup ma't frekwens faan't Caesium - Isotoop ¹³³Cs (9.192.631.770/s).
Struummaacht	I	I	Ampere	A	Maacht faan en likstruum, diar tesken tau struumfeerern, diar 1m paraleel luup, uub en lengde faan 1m en kraaft faan 2?×?10 ^?7 Newton utjmaaget. ^{[B 2]}
Temperatuur	T	Θ	Kelvin	K	¹? _273,16 dial faan't termodunaamisk weedertemperatuur, wan't begant tu friisen. ^{[B 3]}
Mengde	n	N	Mol	mol	At mengde woort ferglikt ma a atoomen faan 0,012 kilogram faan't Karboon -isotoop ¹²C. ^{[B 4]}
Laachtmaacht	I _V	J	Candela	cd	Hinget tuup ma't strualin faan en laacht uub't frekwens 540 × 10 ¹² Hz ^{[B 5]} ma en maacht faan ¹? ₆₈₃ Watt.
↑ Di waars for det faard faan't laacht uun a leesag rum as genau $299\,792\,458\;\mathrm {m} /\mathrm {s}$ . ↑ Sodenang as det magneetisk grunjmiat μ ₀ genau 4?·?π ×?10 ^?7 ^H? _m . ↑ Sodenang frist det weeder ei gans akeroot bi 0 °C , man bi 273,16 K (= 0,01 °C). Wan det weeder genau begant tu friisen, hinget faan a isotoopen uf, diar uun det weeder san. ↑ Sodenang as det molaar mengde faan ¹²C genau 12?×?10 ^?3 ^kg? _mol (= 12 ^g? _mol). ↑ Det as en waagenlengde faan amanbi 555 nm

Bluas Kilogram, Sekund an Kelvin san echt grunjmiaten uun a natuur, aal jo ooder miaten hinge weder diarfaan uf:

Meeter faan Sekund
Mol faan Kilogram
Ampere an Candela faan Meeter, Kilogram an Sekund

Miaten an ianhaiden [ Bewerke | Kweltekst bewerke ]

Aal jo ooder miaten an ianhaiden uun a fusiik hinge faan jo 7 SI-grunjmiaten uf. So as tun bispal:

det ianhaid for't kraaft 1 N ( Newton ) = 1 ^J? _m = 1 m·kg·s ^?2
det ianhaid for't frekwens 1 Hz ( Hertz ) = ¹? _s = s ^-1
det ianhaid for't elektrisk laas 1 C ( Coulomb ) = 1 A · 1 s

[1] Di waars for det faard faan't laacht uun a leesag rum as genau $299\,792\,458\;\mathrm {m} /\mathrm {s}$ .

[2] Sodenang as det magneetisk grunjmiat μ ₀ genau 4?·?π ×?10 ^?7 ^H? _m .

[3] Sodenang frist det weeder ei gans akeroot bi 0 °C , man bi 273,16 K (= 0,01 °C). Wan det weeder genau begant tu friisen, hinget faan a isotoopen uf, diar uun det weeder san.

[4] Sodenang as det molaar mengde faan ¹²C genau 12?×?10 ^?3 ^kg? _mol (= 12 ^g? _mol).

[5] Det as en waagenlengde faan amanbi 555 nm

[B 1]

[B 2]

[B 3]

[B 4]

[B 5]