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a rope around the earth


Have a guess! (brain teaser)
Imagine pulling a rope around the globe (which is a perfect sphere) and tensing the rope tight. Now you add 10 meters to the rope and distribute the rope around the globe so that it is equidistant from the globe (see sketch above).
➽ What is the distance x between the globe and the rope?
➽ Do you think it is enough height for a fly to crawl down through?
Answer:
In the calculation above you can see that the distance is 1,59 m!!
And the astonishing point is: You can do the same with an orange (fruit) and it will give the same result!!
Well, mathematically not really remarkable, but imaginatively it's astonishing! :-)
... and there is an additional point that you may have noticed: on the globe above GB is missing. So the Brexit also is solved! ;-))
Due to several complaints I have reinserted the British Isles. ;-))
By the way:, have you also noticed that longer texts are no longer completely translated by the translator?
According to ➽ Sami Serola's riddle. ...
Imagine pulling a rope around the globe (which is a perfect sphere) and tensing the rope tight. Now you add 10 meters to the rope and distribute the rope around the globe so that it is equidistant from the globe (see sketch above).
➽ What is the distance x between the globe and the rope?
➽ Do you think it is enough height for a fly to crawl down through?
Answer:
In the calculation above you can see that the distance is 1,59 m!!
And the astonishing point is: You can do the same with an orange (fruit) and it will give the same result!!
Well, mathematically not really remarkable, but imaginatively it's astonishing! :-)
Due to several complaints I have reinserted the British Isles. ;-))
By the way:, have you also noticed that longer texts are no longer completely translated by the translator?
According to ➽ Sami Serola's riddle. ...
, Ruebenkraut, Diane Putnam, Ruesterstaude and 6 other people have particularly liked this photo
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kups.ub.uni-koeln.de/841/1/wernerguido.pdf
Viel Spaß beim Lesen. :-))
Interessant ist auch, dass bei meinem letzten Bild auch ein geosphärisches Problem angesprochen wird; nämlich die Bestimmung des Winkels (qibla) nach Mekka von einem beliebigen Punkt der Erde aus. :-)
Zu dem Problem des Architekten mit der Ausrichtung nach Mekka: Er hätte die Moschee einfach am antipodischen Punkt von Mekka bauen sollen, also an der exakt gegenüberliegenden Stelle auf der Erdkugel. Von dort weist nämlich jede Richtung nach Mekka (so wie am Nordpol jede Richtung zum Südpol weist). Beim Bau einer Moschee kann man dort also nichts falsch machen. Einziges Problem: Das ist mitten im Südpazifik und es gibt dort nur Wasser.
Mit (nur) diesem einen Standort wären die Muslime wohl nicht ganz einverstanden. Sie pflegen ja ein eher recht expansives "Geschäftsmodell". ;-)
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