Polecamy Artykuły Nowości
Większość bocianów jest już w dr…
Koniec sierpnia to czas, kiedy większość bocianów już odleciała z terenu Polski. Chyba każde dziecko wie, że bociany odlatują do Afryki, nie każde jednak zdaje sobie sprawę, które regiony tego olbrzymiego kontynentu są zimowymi siedliskami bocianów…
Podziały kwadratu i twierdzenie…
Na ile trójkątów o rozłącznych wnętrzach można podzielić kwadrat? Na ile trójkątów o rozłącznych wnętrzach i jednakowych polach można podzielić kwadrat?
Iść czy biec? Oto jest pytanie!
Czy zastanawialiście się kiedyś, dlaczego małe dzieci zwykle biegną lub podskakują, idąc z rodzicami? Albo dlaczego gdy się śpieszymy przy przejściu z punktu A do punktu B, to czasem idziemy szybko, a czasem podbiegamy?
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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.
Statek Oceania Instytutu Oceanologii…
Instytut Oceanologii Polskiej Akademii Nauk użytkuje statek badawczy s/y Oceania. Badania prowadzone z pokładu Oceanii koncentrują się na obszarach: Morza Bałtyckiego oraz europejskich mórz arktycznych.