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Molomo o Potlakileng ka ho Fetisisa
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All by Design,
Dr. Jonathan C. O'Quinn
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Ditshwele di na le maemo a hodimo haholo a ho sebetsa, ho hlokang eseng feela lero la dipalesa le lengata, empa le protheine le dikotla tse ding tse tswang ho ditshenekegi tse nyenyane tse kang ditshweletane tsa ditholwana, di ja hoo e ka bang ditshweletane tsena tse 300 ka letsatsi. Leha ho le jwalo, bothata bo bonahalang ka sena, ke molomo o molelele, o tshwanang le nale wa tswele, o bonahalang o loketse dipalesa ka ho hlaka.
Seo batho ba bangata ba sa se tsebeng ke hore molomo oa nonyana ena o boetse o loketse hantle ho tšoasa likokoanyana tsena tse nyenyane. Ho e-na le ho ba le sehokelo sa khatarinose botlas'a molomo, joalo ka linonyana tse ling tse ngata tse jang likokoanyana, melomo ea li-hummingbird ke lesapo le tiileng. Leha ho le joalo, lesapo la molomo o ka tlase le lesesane ka mokhoa o makatsang ebile le a kobeha. |
Ha nonyana e nyenyane e bula molomo ho tšoasa tsie ea tholoana, matla a mesifa a hatellang molomo o ka tlase a o kobeha ka likhato tse ka bang 25 'me a atolosa molomo botebong ho eketsa sebaka se sebetsang. Matla a otlolohang a bolokiloeng masapong a molomo o ka tlase a fihla kapele boemong bo itseng, moo o koalanang ka tšohanyetso ka nako e ka tlase ho 1/100 ea motsotsoana, ka lebelo le fetang leo lintsu li ka le fihlelang ka matla a mesifa feela. Lebelo lena le feteletseng le thusa lintsu ho tšoasa lintšintši tsena tse nyenyane.
Jwalokaha ho bonwa hohle tlhahong, sebopeho sa molomo wa nonyana ya hummingbird se tshwaneleha ka ho phethahala bakeng sa mosebetsi wa ona. Taba ya hore molomo ona o ne o lokela ho sebetsa ntle le phoso ho tloha letsatsing la pele e bontsha hore o ne o ke ke wa iphetola ka ho iketsahalla le ka mekgahlelo. Sena se bontsha moralo o rerilweng, o bohlale o buang ka matla ka ho ba teng ha Mmopi.
Bibliography
Smith, M., G. Yanega, and A. Ruina. 2011. Elastic instability model of
rapid beak closure in hummingbirds. J. Theoretical Biol. 282:41–51.
Figure caption:
Broad-tailed Hummingbird (Selasphorus platycercus)
National Park Service Photo, www.nps.gov, courtesy of Paula Hamilton.
Molomo o Potlakileng ka ho Fetisisa
(Originally published in "Creation Matters" as: Fastest Beak Around)
<https://www.creationism.org/sesotho/CrsCmFastestBeak_st.htm>
