Ein interessanter Artikel der zeigt, dass unsere Atmosphäre gezielt mit Strahlung erwärmt wird und so wie ein Spiegel oder Linse genutzt wird. Ist leider nur auf englisch!
The Optical Lens and Mirror:
It is the phenomena of refraction, along with geometric shape that allows a lens to focus light. Given a pair lens, made from identical materials, the lens with greater curvature will have a shorter focal length. Given a pair of lens made from differing materials, and with identical curvature, the lens with a higher refractive index, will have a shorter focal length. In other words, both curvature AND refractive index determine lens focal length. Some types of mirrors and optical filters also depend on refraction for their functionality. Reflection from a non-metallic surface is caused by the difference in refractive index between the air and the reflective material. In some situations, a lens or mirror can form inside a single material, due to a shift in refractive index, caused by environmental conditions in differing parts of the material (1.1.3).
[Sie müssen registriert oder eingeloggt sein, um das Bild sehen zu können.]
bei dem unteren Bild kann man sehr gut an der Spiegelung erkennen, dass die Sonne genau über dem verwelkten Busch verläuft!
Weiterlesen
The Optical Lens and Mirror:
It is the phenomena of refraction, along with geometric shape that allows a lens to focus light. Given a pair lens, made from identical materials, the lens with greater curvature will have a shorter focal length. Given a pair of lens made from differing materials, and with identical curvature, the lens with a higher refractive index, will have a shorter focal length. In other words, both curvature AND refractive index determine lens focal length. Some types of mirrors and optical filters also depend on refraction for their functionality. Reflection from a non-metallic surface is caused by the difference in refractive index between the air and the reflective material. In some situations, a lens or mirror can form inside a single material, due to a shift in refractive index, caused by environmental conditions in differing parts of the material (1.1.3).
[Sie müssen registriert oder eingeloggt sein, um das Bild sehen zu können.]
bei dem unteren Bild kann man sehr gut an der Spiegelung erkennen, dass die Sonne genau über dem verwelkten Busch verläuft!
Weiterlesen