Polecamy Artykuły Nowości
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Ciepła woda płynąca w islandzkich kranach jest pochodzenia geotermalnego, więc jest przyjazna środowisku, ale zawiera wysokie stężenia związków siarki, które powodują jej nieprzyjemny zapach.
Dlaczego w niektórych kalkulatorach…
W niektórych kalkulatorach Hewlett-Packard zastosowano system logiczny RPN, upraszczający znacznie obliczenia algebraiczne. Do powstania tego systemu przyczynił się m.in. polski matematyk – prof. Jan Łukasiewicz. System został wynaleziony ponad…
Roślinny Feniks
Ta wyjątkowa roślina przetrwa nie tylko długotrwałą suszę. Nie straszny jej nawet pożar.
Loty Levy'ego, czyli jak polują…
Co ma wspólnego lot albatrosa poszukującego pożywienia z dyfuzją anormalną?
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inter-ideograph"><span style="mso-fareast-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman"">Rycina przedstawiająca pokrzywę
zwyczajną </span><a href="http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg"><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg</span></a><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">
(rycina pochodzi z książki </span>Prof. Dr. Otto Wilhelm Thomé <i>Flora von
Deutschland, Österreich und der Schweiz</i> 1885, Gera, Germany)<span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman""></span></p>
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Zapomniane oblicze pokrzywy
Pokrzywa zwyczajna (Urtica dioica L.) to jedna z tych roślin, którą poznajemy już we wczesnym wieku i to najczęściej od tej nieprzyjemniej strony. Swędzenie, zaczerwienienie, wysypka to częste efekty spotkania z pokrzywą.