Vim li cas snowflakes geometric?
Vim li cas snowflakes geometric?

Video: Vim li cas snowflakes geometric?

Video: Vim li cas snowflakes geometric?
Video: The magic of Fibonacci numbers | Arthur Benjamin 2024, Kaum ib hlis
Anonim

Snowflakes yog symmetrical vim hais tias lawv muaj kev cuam tshuam qhov kev txiav txim sab hauv ntawm cov dej molecules thaum lawv npaj lawv tus kheej nyob rau hauv lub xeev khoom (tus txheej txheem ntawm crystallization). Cov dej molecules hauv lub xeev cov khoom, xws li hauv dej khov thiab daus, tsim cov ntawv cog lus tsis muaj zog (hu ua hydrogen bonds) rau ib leeg.

Kuj tseem paub yog, puas yog snowflake geometric duab?

Lub ntuj, hexagon geometry ntawm a snowflake . Dej (los yog dej vapour) molecules txuas mus rau ib qho hmoov av thiab tsim qhov pib ntawm a snowflake . Cov molecules crystallize rau ib daim ntawv hexagonal, txhua snowflake yog tsim nyob ib ncig ntawm no puab.

Dab tsi yog qhov txawv ntawm snow thiab snowflakes? Piav qhov qhov sib txawv ntawm snowflakes thiab daus siv lead ua. A daus Crystal yog ib qho siv lead ua ntawm dej khov. A snowflake yog ib lo lus dav dav rau tus kheej daus siv lead ua, ob peb daus crystals daig ua ke, los yog loj agglomerations ntawm daus crystals uas tsim "puff-pob." 2.

Tib neeg kuj nug, vim li cas snowflakes hexagonal?

Cov molecules hauv cov dej khov nab kuab sib koom ua ke hauv ib qho hexagonal qauv, ib qho kev npaj uas tso cai rau cov dej molecules - txhua tus nrog ib qho oxygen thiab ob lub hydrogen atoms - tsim ua ke hauv txoj kev ua tau zoo tshaj plaws.

Vim li cas snowflakes tiaj tus?

Qhov no yog vim li cas Snowflakes yog Ib txwm Pav ca . Cov dej khov molecules ib txwm coj 2D duab txawm tias tuaj yeem loj hlob hauv 3D cov lus qhia. Snowflakes yog txhua yam tshwj xeeb. Cov dej molecules muaj qhov khoov geometry thiab lub polar tsim qhov twg cov pa oxygen me ntsis zoo thiab cov hydrogens tsis zoo.

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