The discussion revolves around the differences in how human skin reacts to infrared (IR) and ultraviolet (UV) radiation, particularly in terms of heat sensation. Participants explore the nature of heat radiation and its interaction with the body, questioning the mechanisms behind sensory perception of different types of radiation.
The conversation is ongoing, with various viewpoints being expressed. Some participants provide insights into the absorption characteristics of different radiation types and their physiological effects, while others raise questions about the nature of heat and thermal radiation.
There is a mix of physics and biology in the discussion, with some participants noting the complexity of how the body senses heat and questioning whether the topic fits strictly within the realm of physics homework. Additionally, references to literature and external sources are made to support claims and clarify concepts.
The difficulty applying that image to the question in this thread is that most of the visible light energy that doesn’t make it to earth’s surface (the yellow area in the visible band) is that which is reflected by clouds. The context of the question would be without clouds.malawi_glenn said:Depends on what you mean by "peak"...
What is interesting to know is perhaps "most energy" i.e the area in the diagram in post #23
And rayleigh scattering...haruspex said:which is reflected by clouds
Hard for me to know what the question(s) are at the moment.haruspex said:The context of the question
Yes, there is Rayleigh scattering, but I would think most of it is what is blocked by clouds.malawi_glenn said:And rayleigh scattering...
Kinda depends on how you wanna phrase the question, like on an average square meter on the surface of the earth. Then you need to use the average cloud coverage which is IIRC around 60%?haruspex said:Yes, there is Rayleigh scattering, but I would think most of it is what is blocked by clouds.