Polecamy Artykuły Nowości
Życie w lodowym serze
Zagłębienia kriokonitowe – czyli życie w lodzie...
Ile waży kilogram powietrza?
Kilogram powietrza, jak bardzo dziwnie by to nie brzmiało, waży dokładnie tyle, co kilogram cukru. Poza tym zachowuje się podobnie jak woda w ocenie. A nawet go nie widać…
Reliktowy „las karboński ” w okolicy…
„Las karboński” już niedługo odrodzi się po zimowym śnie, jest jednym z obowiązkowych punktów wycieczki EDUSCIENCE do Raciborza.
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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.
Jak powstaje mgła?
Z mgłą spotykamy się dość często, szczególnie w chłodnej porze roku, i zazwyczaj jesteśmy jej bardzo niechętni, ponieważ powoduje utrudnienia zarówno w transporcie drogowym, jak i lotnictwie. A jak powstaje?