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Mathematical aspects of the equation of time. (Mathematische Aspekte der Zeitgleichung.) (German)
MNU, Math. Naturwiss. Unterr. 67, No. 3, 168-176 (2014).
Classification: M50 G60 I40 I50
1
Sun, moons, planets. Astronomical construction kits and their basics. (Sonne, Mond, Wandelsterne. Astronomische Bausätze und ihre Grundlagen.) (German)
IBDG, Inf.bl. Geom. 32, No. 2, 28-32 (2013).
Classification: M50 G40 G60 U60
2
Length of daytime. (Tageslänge.) (German)
Wurzel 45, No. 12, 276-279 (2011).
Classification: M50 G60
3
Geometry on the global sphere ‒ a plea for the globe. (Geometrie auf der Erdkugel ‒ ein Plädoyer für den Globus.) (German)
IBDG, Inf.bl. Geom. 30, No. 2, 30-37 (2011).
Classification: G60 M50 G50 G90
4
Mathematics in medieval Islam. Transl. from the English by Petra G. Schmidl with the collaboration of Heinz Klaus Strick. (Mathematik im mittelalterlichen Islam.) (German)
Berlin: Springer (ISBN 978-3-540-76687-2/hbk; 978-3-540-76688-9/ebook). xvi, 219~p. (2011).
5
Pentagramma figurations. (Pentagrammafigurationen.) (German)
Mathematikunterricht 56, No. 6, 39-52 (2010).
Classification: G60 G90
6
Handy models of sphere geometry and hyperbolic geometry. (Handgreifliche Modelle der Kugelgeometrie und der hyperbolischen Geometrie.) (English)
Mathematikunterricht 56, No. 6, DE (2010).
Classification: G60 G90 U60
7
Geometry on the surface of a sphere. (Geometrie auf der Kugeloberfläche.) (German)
Mathematikunterricht 56, No. 6, 16-27 (2010).
Classification: G60
8
Apple peels as patterns. (Apfelschalen als Schnittmuster.) (German)
Wurzel 43, No. 3-4, 50-51 (2009).
Classification: G40 G60
9
Sighting the International Space Station. (English)
AMATYC Rev. 30, No. 1, 66-80 (2008).
Classification: M55 G65 H65
10
Spherical triangles between sky and earth. (Boldriehoeken tussen hemel en aarde.) (Dutch)
Uitwiskeling 22, No. 4, 11-39 (2006).
Classification: G64 D44
11
From triangles on a sphere to the flat plane. (Van boldriehoeken naar het platte vlak.) (Dutch)
Euclides 81, No. 8, 392-396 (2006).
Classification: G40 M50
12
The transit of Venus of 8 June 2004. An extraordinary astronomic event. (Le transit de Vénus du 8 juin 2004. Un événement astronimique exceptionnel!) (French)
Math. Péd., No. 147, 3-32 (2004).
Classification: M50 G60
13
Episodes in the mathematics of medieval Islam. 1st paperback ed. (English)
New York, NY: Springer (ISBN 0-387-40605-0/pbk). xiv, 197~p. (2003).
Classification: A30
14
Taking bearings on the sphere. (Peilung auf der Sphäre.) (German)
Wiss. Nachr., No. 123, 34-37 (2003).
Classification: M50 G60 R20
15
Elements of geometry. Elemente der Geometrie. (German)
ZDM, Zentralbl. Didakt. Math. (Apr 1993) v. 25(2) p. 63-64. Book review: Scheid, H.: Elmente der Geometrie, Mannheim: BI, 1991, 498 p., ISBN 3-411-14931-0. [ISSN 0044-4103]
Classification: G19 G10
16
Astronomy in mathematics education - orientation towards the subject. Astronomie im Mathematikunterricht - Orientierung an der Sache. (German)
Mathematikunterricht. (Mar 1993) v. 39(2) p. 5-17. [ISSN 0025-5807]
Classification: M50
17
The astronomical clock in the dome of Muenster. Die Astronomische Uhr im Dom zu Muenster. (German)
MNU, Math. Naturwiss. Unterr. (15 Oct 1992) v. 45(7) p. 403-410. CODEN: MNWUAL [ISSN 0025-5866]
Classification: G63 M53
18
Horizon considerations. Horizont-Betrachtungen. (German)
MNU, Math. Naturwiss. Unterr. (15 Oct 1992) v. 45(7) p. 387-391. CODEN: MNWUAL [ISSN 0025-5866]
Classification: G64 M54
19
Case studies in geometry: practical applications of geometry. Geometrie von Fall zu Fall: Praktische Anwendungen der Geometrie. (German)
ZDM, Zentralbl. Didakt. Math. (Dec 1992) v. 24(6) p. 205-207. Book review: Schneebeli, H.R.: Geometrie von Fall zu Fall: Praktische Anwendungen der Geometrie; Muenchen: Ehrenwirth, Zuerich: Sabe, 1991, 159 p., ISBN 3-431-03167-6. [ISSN 0044-4103]
Classification: G10
20
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