nsxt2000
09-26-2007, 02:49 AM
Last year while driving my NSX with the top off and A/C going I was heading down the expressway. I noticed that each time I went under an overpass there was a brief but noticable drop in cockpit temperature. This was probably attributed to the short shadow of the overpass and perhaps the overpass altered the wind dynamics so that more cool air stayed inside the cockpit.
As I pondered that thought ( I must admit that it dosen't take much to distract my little mind) I started thinking about the shadow cast by the overpass. Does a shadow have thickness? Is the part of the roadway with the shadow ever so slightly thicker than the road with no shadow?
Does it have weight? Light has energy and energy has mass, so to block light is there less mass? As a rule we can't see air and yet it has volume and weight.
Sooo, if there is an intelect lurking on the site who can answer this physics question I would be curious about the answer.
Where is Carl Sagen when you need him???
As I pondered that thought ( I must admit that it dosen't take much to distract my little mind) I started thinking about the shadow cast by the overpass. Does a shadow have thickness? Is the part of the roadway with the shadow ever so slightly thicker than the road with no shadow?
Does it have weight? Light has energy and energy has mass, so to block light is there less mass? As a rule we can't see air and yet it has volume and weight.
Sooo, if there is an intelect lurking on the site who can answer this physics question I would be curious about the answer.
Where is Carl Sagen when you need him???