Finding the surface temperature of the Sun using a parked car

Lee, Wei; Gilley, Heidi L.; Caris, Joshua

doi:10.1119/1.18729

Cited by 24 publications

(1 citation statement)

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“…In many settings with challenging topics, the use of astronomy or astronomy-related activities has shown to significantly help high-school and college students grasp complex concepts and help them get into science [13,18]. Furthermore, several researchers have shown that evidence-based active engagement courses help students significantly to grasp complex concepts [15,24], and even reduce the gender gap in STEM areas [14]. This improvement is further enhanced by making students use real data and even capture the data themselves [2,9].…”

Section: Introductionmentioning

confidence: 99%

Using smartphone photographs of the Moon to acquaint students with non-Euclidean geometry

Caerols,

Carrasco,

Asenjo

2021

Preprint

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Although they are sometimes considered problematic to grasp by students, the concepts behind non-Euclidean geometry can be taught using astronomical images. By using photographs of the Moon taken with a smartphone through a simple telescope, we were able to introduce these concepts to high-school students and college newcomers. By recognizing different Moon geological structures within the photograph, we teach students how to calculate distances of mountain ranges or areas of craters on the Moon's surface, introducing the notions of geodesics and spherical triangles. Furthermore, students can empirically see that the correct estimations for the actual values cannot be obtained using flat geometry. Instead, by using three-dimensional curved geometry, precise estimates of lengths and areas of geological elements in the Moon can be computed with less than 4% error. These procedures help students understand, concretely, non-Euclidean geometry concepts.

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Section: Introductionmentioning

confidence: 99%

Using smartphone photographs of the Moon to acquaint students with non-Euclidean geometry

Caerols,

Carrasco,

Asenjo

2021

Preprint

View full text Add to dashboard Cite

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Heterogeneous control of blood flow amongst different vascular beds

2000

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The control and maintenance of vascular tone is due to a balance between vasoconstrictor and vasodilator pathways. Vasomotor responses to neural, metabolic and physical factors vary between vessels in different vascular beds, as well as along the same bed, particularly as vessels become smaller. These differences result from variation in the composition of neurotransmitters released by perivascular nerves, variation in the array and activation of receptor subtypes expressed in different vascular beds and variation in the signal transduction pathways activated in either the vascular smooth muscle or endothelial cells. As the study of vasomotor responses often requires pre‐existing tone, some of the reported heterogeneity in the relative contributions of different vasodilator mechanisms may be compounded by different experimental conditions. Biochemical variations, such as the expression of ion channels, connexin subtypes and other important components of second messenger cascades, have been documented in the smooth muscle and endothelial cells in different parts of the body. Anatomical variations, in the presence and prevalence of gap junctions between smooth muscle cells, between endothelial cells and at myoendothelial gap junctions, between the two cell layers, have also been described. These factors will contribute further to the heterogeneity in local and conducted responses. © 2000 John Wiley & Sons, Inc. Med Res Rev, 21, No. 1, 1–60, 2001

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