[{WikipediaArticle oldid='221883195'}]



[{VerifyArticle user='eertl' template='Standard' date='25. Juni 2014' page-date='2014' comment='Überprüft, nach Sexl, R.U., Kühnelt, H., Stadler, H., Jakesch, P., Sattlberger, E., Physik 5' funder='21' }]
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!!!License Information of Images on page
||Image Description||Credit||Artist||License Name||File
| David Randolph Scott, Commander der Mondmission Apollo 15 (1971), demonstriert anhand einer Feder und eines Hammers, die er im luftleeren Raum auf dem Mond fallen lässt, dass alle Körper unabhängig von ihrer Masse gleich schnell fallen.| https://nssdc.gsfc.nasa.gov/planetary/lunar/apollo_15_feather_drop.html| NASA| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Apollo 15 feather and hammer drop.ogv
| The Wikimedia Commons logo, SVG version.| Original created by Reidab ( PNG version ) SVG version was created by Grunt and cleaned up by 3247 . Re-creation with SVG geometry features by Pumbaa , using a proper partial circle and SVG geometry features. (Former versions used to be slightly warped.)| Reidab , Grunt , 3247 , Pumbaa| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Commons-logo.svg
| Begriffsklärungs-Icon (Autor: Stephan Baum)| Eigenes Werk ( Originaltext: Own drawing by Stephan Baum ) Original Commons upload as File:Logo Begriffsklärung.png by Baumst on 2005-02-15| Stephan Baum| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Disambig-dark.svg
| An initially-stationary object which is allowed to fall freely under gravity drops a distance which is proportional to the square of the elapsed time. This image, spanning half a second, was captured with a stroboscopic flash at 20 flashes per second.  During the first 1/20th of a second the ball drops one unit of distance (here, a unit is about 12 mm); by 2/20ths it has dropped at total of 4 units; by 3/20ths, 9 units and so on. To take the picture, the ball - about the size of a tennis ball - was suspended by a short length of black thread and was released as the shutter was opened and the flash triggered. The shutter remained open for the whole of the half-second period, during which time the flash fired multiple times to capture the ball at 1/20 second intervals.| Eigenes Werk| MichaelMaggs| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Falling ball.jpg
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