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universe
Map of the observable universe with some of the notable astronomical objects known today. The scale of length increases exponentially...
Geology
The symbol of the simple sounding method, shown in planar drawings relating to geotechnical investigations.
Science
Updated Köppen-Geiger climate map Af Am Aw BWh BWk BSh BSk Csa Csb Cwa Cwb Cfa Cfb Cfc Dsa Dsb Dsc Dsd...
Rain
Heavy rain falling over the desert at sunset
Wind
Mountain wave schematic. The wind flows towards a mountain and produces a first oscillation (A). A second wave occurs further away and...
Wind
EF0 damage example--Shingles are torn from roof
Energy
Joule's apparatus for measuring the mechanical equivalent of heat. A descending weight attached to a string causes a paddle immersed in...
Fire
Fire is affected by gravity. Left: Flame on Earth; Right: Flame on the ISS
Science
Pierre Gassendi.
Animals
The hypocarnivorous American black bear (Ursus americanus)
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