noone Posted October 25, 2015 Share Posted October 25, 2015 1-does air reflect better when there isn't humidity? 2-Some organism can see smaller waves of light then us... can i now which organism can do it? 3-how does projector works? thank you Link to comment Share on other sites More sharing options...
swansont Posted October 25, 2015 Share Posted October 25, 2015 1-does air reflect better when there isn't humidity? Reflectivity depends on the index of refraction, so it depends on what happens to the index as humidity varies. 1 Link to comment Share on other sites More sharing options...
John Cuthber Posted October 25, 2015 Share Posted October 25, 2015 Air doesn't normally reflect light. noone, perhaps you could explain what you mean. Also, it's easier if you ask one question in each thread. 1 Link to comment Share on other sites More sharing options...
noone Posted October 28, 2015 Author Share Posted October 28, 2015 Reflectivity depends on the index of refraction, so it depends on what happens to the index as humidity varies. So...the light will reflect or not? Air doesn't normally reflect light. noone, perhaps you could explain what you mean. Also, it's easier if you ask one question in each thread. I just wanna find a way to reflect in the air and i m traino to get more information possibile about it Link to comment Share on other sites More sharing options...
John Cuthber Posted October 28, 2015 Share Posted October 28, 2015 Why do you think air reflects light? Link to comment Share on other sites More sharing options...
noone Posted October 28, 2015 Author Share Posted October 28, 2015 Why do you think air reflects light? Air reflect light but we just can t see the reflection.... Link to comment Share on other sites More sharing options...
Strange Posted October 28, 2015 Share Posted October 28, 2015 Air reflect light but we just can t see the reflection.... That is a strange definition of reflection. Why can't we see it? Link to comment Share on other sites More sharing options...
swansont Posted October 29, 2015 Share Posted October 29, 2015 If you had two layers of air with different densities (perhaps owing to a temperare difference) younwould get reflection. A tiny, tiny amount, at the interface. Refraction is much more common, since that doesn't require a sharp change in index. Link to comment Share on other sites More sharing options...
noone Posted October 29, 2015 Author Share Posted October 29, 2015 That is a strange definition of reflection. Why can't we see it? beacause the waves of the light are too smaller to be seen by human eyes. If you had two layers of air with different densities (perhaps owing to a temperare difference) younwould get reflection. A tiny, tiny amount, at the interface. Refraction is much more common, since that doesn't require a sharp change in index. so the humidity isn't a matter? Link to comment Share on other sites More sharing options...
Strange Posted October 29, 2015 Share Posted October 29, 2015 (edited) beacause the waves of the light are too smaller to be seen by human eyes. What do you mean by "too small"? Wavelength? That would not be changed by reflection. 2-Some organism can see smaller waves of light then us... can i now which organism can do it? This is more of a biology question. "for animals ranging from bees to reindeer, ultraviolet lights up their vision" http://www.theatlantic.com/technology/archive/2011/08/6-animals-that-can-see-or-glow-in-ultraviolet-light/243634/ 3-how does projector works? I think that needs a separate thread. http://www.explainthatstuff.com/projectiontv.html Edited October 29, 2015 by Strange Link to comment Share on other sites More sharing options...
swansont Posted October 29, 2015 Share Posted October 29, 2015 so the humidity isn't a matter? It does matter, but it would be a small change in an already small effect Link to comment Share on other sites More sharing options...
noone Posted November 15, 2015 Author Share Posted November 15, 2015 I m very confused. I have read some were that the reflection depends on wave of the light and the size of the particles... I'm sorry if I didn't written it right because I'm from Italy. Link to comment Share on other sites More sharing options...
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