Polecamy Artykuły Nowości
Prehistoryczne gady w kolorze
W prehistorii morza i oceany aż roiły się od pływających gadów. Morskie przestworza przemierzały rzesze ichtiozaurów, tylozaurów, żółwi skórzastych... Jakiego koloru były te zwierzęta?
Plamy na Słońcu
Plamy słoneczne były pierwszymi obiektami, które zauważono na powierzchni Słońca już niedługo po wynalezieniu teleskopu. Było to w 1611 roku, chociaż jak się później okazało, wzmianki o plamach na Słońcu odnaleziono w starożytnych kronikach…
Co mogą zmierzyć sejsmometry?
Sejsmometry potrafią zarejestrować trzęsienie ziemi – to żadna sensacja. W końcu do tego zostały zaprojektowane i zbudowane. Ale ta czuła aparatura potrafi zarejestrować coś więcej.
Meteor a meteoryt
Czym się różnią?
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<p class="MsoNormal"><span style="font-size:16.0pt;line-height:115%;mso-bidi-font-weight:
bold">Fragment haczykowatych łusek okrywy koszyczka kwiatowego (popularnie nazywanego
rzepem).</span></p>
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mso-bidi-theme-font:minor-bidi;mso-ansi-language:PL;mso-fareast-language:EN-US;
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Łopian, przydrożny chwast, stał się…
Idąc polną drogą, na przykład w czasie wakacji, zwróćcie uwagę na koszyczki kwiatowe łopianu. Dzięki obserwacji przyczepnych rzepów, ludzie wymyślili taśmy, których używa się powszechnie w przemyśle odzieżowym, np. do zapinania kurtek, butó…