Angle between terminator and meridian: flat geometry versus formulae of solar azimuth and an easy approach to the daylight map

Martín, Perea-Alvarez de Eulate; Gloria, Del Río-Cidoncha; Montes-Tubío, Francisco

doi:10.1088/1361-6404/aab57e

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The terminator line, or twilight zone, is a moving line that divides the daylight side and the dark night side of a planetary body. The lunar terminator is the division between the illuminated and dark hemispheres of the Moon [21,22], as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

The Moon, a disk or a sphere?

Duarte,

Mota,

de Carvalho

et al. 2021

Preprint

View full text Add to dashboard Cite

In this paper, we present a physical modeling activity whose objective is to allow students to determine the differences between a disk and a sphere using pure scientific criteria. Thereunto, we reproduce the Sun-Earth-Moon system with low-cost materials and compare the illumination effects on the Moon considering two possible shapes for it (a sphere and a disk). The analysis is based on the shape of the Terminator line produced in each case as a function of the illumination angle. The results obtained are first discussed and then applied so that one can interpret the observed patterns in the illumination effects of other celestial bodies, such as Venus or even the Earth. Thereby, the activity can be very useful to unmask the unscientific idea of Flat Earth. The entire activity is easily replicable and it may be useful to promote a more realistic view of science and its methods.

show abstract

Section: Introductionmentioning

confidence: 99%

The Moon, a disk or a sphere?

Duarte,

Mota,

de Carvalho

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

The Moon, a disk or a sphere?

Duarte¹,

Mota²,

Carvalho³

et al. 2021

Phys. Educ.

View full text Add to dashboard Cite

In this paper, we present a physical modeling activity whose objective is to allow students to determine the differences between a disk and a sphere using pure scientific criteria. Thereunto, we reproduce the Sun–Earth–Moon system with low-cost materials and compare the illumination effects on the Moon considering two possible shapes for it (a sphere and a disk). The analysis is based on the shape of the terminator line produced in each case as a function of the illumination angle. The results obtained are first discussed and then applied so that one can interpret the observed patterns in the illumination effects of other celestial bodies, such as Venus or even the Earth. Thereby, the activity can be very useful to unmask the unscientific idea of flat Earth. The entire activity is easily replicable and it may be useful to promote a more realistic view of science and its methods.

show abstract

Angle between terminator and meridian: flat geometry versus formulae of solar azimuth and an easy approach to the daylight map

Cited by 2 publications

References 7 publications

The Moon, a disk or a sphere?

The Moon, a disk or a sphere?

The Moon, a disk or a sphere?

Contact Info

Product

Resources

About