Polecamy Artykuły Nowości
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Niagara – widoczne dwie części: American i Canadian Falls. </span><span style="font-size:11.0pt;line-height:115%;font-family:"Calibri","sans-serif";
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EN-US;mso-bidi-language:AR-SA" lang="EN-US">Fot. Safron Blase, źródło: <a href="http://commons.wikimedia.org/wiki/Niagara_Falls#mediaviewer/File:Niagara_Falls_Storm.jpg">http://commons.wikimedia.org/wiki/Niagara_Falls#mediaviewer/File:Niagara_Falls_Storm.jpg</a></span><!--[if gte mso 9]><xml>
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Wodny spektakl
Czy jest wśród Was ktoś, kto nie słyszał o wodospadzie Niagara? Wodospad ten znajduje się na granicy Kanady i Stanów Zjednoczonych. Nie jest największy na świecie, nie niesie najwięcej wody. W czym tkwi jego magia?
Pierwszy barometr
Kiedy około roku 1641 Włoch Gasparo Berti przeprowadzał swój eksperyment, wcale nie miał zamiaru zostać prekursorem barometru. Chciał się jedynie dowiedzieć, dlaczego nie można odpompować wody ze studni głębszych niż 10 metrów.
Wiosna w Arktyce
Po długiej i mroźnej zimie, wiosną przyroda w Arktyce budzi się do życia. Trwająca nawet kilka miesięcy noc polarna ustępuje polarnemu dniowi, słońce wędruje coraz wyżej nad horyzontem, a jego ciepło zaczyna roztapiać śnieg i lód.
Nanorurkowe włókno z... długopis…
Naukowcy znaleźli nowe, nietypowe zastosowanie dla długopisu. Zamiast tuszu użyli wodnego roztworu nanorurek węglowych (CNT) oraz poli(tlenku etylenu) – PEO. Efekt? Włókno przewodzące prąd elektryczny długie na kilkadziesiąt centymetrów, które…
„Pancake ice”, czyli „lodowe naleśniki”…
„Pancake ice” w dosłownym tłumaczeniu oznacza lodowe naleśniki. Takie struktury tworzą się podczas zamarzania wody morskiej, niekiedy także rzecznej.