The discussion revolves around the reasons why sunlight appears to lose heat as it travels through space to reach Earth. Participants explore concepts related to temperature, the nature of sunlight, and the properties of space, while also touching on misconceptions presented in popular media regarding exposure to vacuum.
Participants express differing views on the application of temperature to sunlight and the properties of space. There is no consensus on the implications of these concepts, and the discussion remains unresolved regarding the broader understanding of sunlight and space.
Some statements rely on specific definitions of terms like "ray" and "void," which may not be universally understood. The discussion also touches on the effects of vacuum on the human body, which is a separate topic from the primary focus on sunlight and space.
Simon Bridge said:The concept of temperature does not apply to individual rays.
The heat you experience off sunlight comes from the density of the rays (we'd say "flux") rather than from individual rays. Since the rays diverge in all directions, the density of the rays (the number that pass through each square meter) decreases with distance from the sun. At double the distance, the number of rays is quartered.
But we need to be careful - the word "ray" has a specific definition in science and I am not sure that is the definition you are using.
I don't know what you mean by "does space have property" ... and I'm not sure that "void" is a precise term ...
Are you asking about the classical vacuum?
There is a sense in which we can talk about the properties of empty space - you have been doing that as soon as you say it is empty ... which suggests it has the property of volume. Things can travel in it - so it has to have an extent and a geometry ... we can discover the geometry by tracing trajectories just like we discover the geometry of the surface of the Earth. It's a big subject ... so the short answer is "yes: it makes sense to talk about space having properties".
No. The moviemakers were using artistic license. You'll see other movies where other things happen.kalidas1992 said:Thank you san for clearing my doubt. I have seen in a film featuring a scene when a astronomer opens his space helmet off his head his head getting shattered into tiny pieces. Does that makes sense or is that what really happens?