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KILOGRAM TEHNA THAR  : Planck’s constant

(Science &Technology thlirzauna)

Er. Chhungpuia Renthlei

(Written on 10.1.2019)

Science & Technology hmalakna in Kum  130 lai mai  kilogram tehfung  atana  kan hman mek "Le Grand K" chu   kumin 2019  may 20 hian  "Planck’s constant"  hmanga thlak a ni dawn ta. 

Kilogram  han tih hrim hrim hi chu kan hre fur awm e. Mahse, enge anih chiah tih leh eng hmanga an chhut chhuah nge tih erawh kan hre thuk viau lo maithei.A hmasain Gram leh Kilogram an teh dan han sawi phawt ila a tha awm e.

Gram leh Kilogram

Bawm kil li nei, a chhunglam  sanzawng, hlai zawng leh chhah zawng centimetre 1  vek (cubic Centimetre) chhungah tui(water) thun ta ila, atmospheric pressure pangngaiah  tuiril anga a awm that theihna  ber melting point of ice (4 Celcius)ah dah ta bawk ila.Heta tui(water) inhlawmkhawm tam lam (mass) hi 1 gram tiin an vuah. Hei hi Kum 1795 kuma scientist  te ruahman ang a ni.Tichuan, 1 kilogram chuan  tui (water)  1,000 cubic cm inhlawmkhawm tam lam (mass) sawina atana hman a ni ta a ni.

1 kilogram tlukpui tehna: Le Grand K

Amaherawh chu hetianga tui(water) hmanga  standard measurement siam hi a buaithlak em avangin Kum zabi 18 na atang khan 1 kilogram tlukpui tehna atan Platinum  thir tlawm mum an hmang leh ta a. Hei hi Le Grand K  tiin an sawi bawk.Tichuan, kum 1889 atangin standard kilogram  atan International System of Measurement (SI) units ah an hmang ta a ni.He standard kilogram  tlukpui tehna  hi  International Bureau of Weights and Measures laboratory, Sèvres, France khawpuiah uluk taka vawn that a ni  bawk. Tichuan, vawiin thlenga  khawvel hmun hrang hranga buk lung te hi hemi mil tura siam vek an ni.Le Grand K leh tui(water)hmanga  standard measurement  siam hi a inmil leh mil loh kum 40 dan zelah an en that zel a ni thin.

Engvangin nge  tehfung thlak a ngaih tak?

Kum 1989 khan 1kg  tehna hmun hrang hrang a mite aiin 50 micrograms laiin he Platinum  thir tlawm mum hi a zang zawk tih hmuhchhuah a ni. chhan ni ber a an sawi chu he Le Grand K  hi an environmental factors hrang hrang ( sik leh sa) avangin atoms a hlauh then theih vang niin National Physical Laboratory (NPL)chuan an sawi. Kan innghahna ber a dik loh takah chuan khawvel ram tina  kan buk lung hman te hi a dik lo tihna a ni ber mai. Nitina kan hmanna naran angah chuan eng tham nilo mahse, thil rit tak tak ah Ton za telah phei chuan a diklohna hi a tam tham khawp ang. Tin, Thil  zang lutuk tak angah leh scientific & medical research angah  erawh chuan thil pawi tak a ni thei  . 

Tehfung thar tur Planck’s constant  chu engni ?

Tichuan, He harsatna sukiang tur hian Kum 2011 a  General Conference on Weights and  Measures (CGPM) chuan fundamental physical constant pawimawh tak, Planck’s constant hmanga  tehna standard siam an rawt chhuak a.Planck constant hi kan hriat theih dan awlsam ber chuan, tehna pathum, meter, kilogram leh second   hmanga thil sakhat thil mur te thei ber atom chetvel dan leh khawsazia sawina a ni. Hemi hmang hian Speed of light tluk zet a chaka meter leh  second  teh theih anih avangin  kilogram nih phung pawh  a rintlak zawkin a dik zawk em em tura ngaih a ni.Planck's constant  hi physics mithiam, Bryan Kibble a siam chhuah Kibble balance instrument  hmanga teh a ni.

Engtikah nge  tehfung thar hman anih dawn?

Nikum 2018  khan International Bureau of Weights and Measures  ten an buatsaih,  ram hrang hrang 60  palai kal khawmna  CGPM 2018  chuan  lungrual takin an  pawm  ta.Tichuan, kumin World Metrology Day  May 20, 2019 atang hian Kilogram  tehna atan khawvel pumpuiah  International System of Measurement (SI) units thar, Planck’s constant  hi kan hmang  dawn ta a ni. Keini mizoram a kan hman ang chi buk lung te hi chu a ngaiin kan la hmang tho anga, Rihzawng uluk leh dik taka teh ngaihna Measurement khawl leh buklung hrang hrang te erawh  siam rem a ni ang.

Tehfung leh mizo te

Tehna han sawi takah chuan ka han belh hram duh chu Kan rinawm loh vang leh  rilru that loh vang a Kan nitin sumdawnna leh bazara thil hralh leh leina ah ringawt pawh  bukna dik loh vang nilova, hrereng chunga kan  buk dik loh luih te  han ngaihtuah chuan Scientist ten tehfung dik leh hman tlak ber duhin hetiang hian nasa takin hma la mahse keini kristian rama cheng Pathian nung ringtu inti te ah chuan bukna dik neih chu ala harsa dawn hle mai.

Bukna dik lo hi Lalpa mit hmuha thil tenawm tak anih avangin Planck’s constant hmanga  Le Grand K tehfung  thlak ai mah hian Pathian rinna thinlung dik tak nena kan rilru dik lo leh pamham kan thlak a, moral reformation kan neih hi a tun dinhmunah chuan a pawimawh hle zawk  mai.