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      | Take, for example, this smooth hard kitchen floor. There 
		are actually raccoon tracks across this floor, but they are invisible 
		when viewed at this angle. |  
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					Sideheading involves lying down on the floor, with your head 
					right on the floor and your eyes facing the lightYou can see from this photo that the tracks "magically" 
					appear from invisibility!
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      | It is possible to see a great amount of detail if 
		conditions are good. Ideally you should be at as low an angle to the 
		tracks as possible. |  
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      | Sideheading is also effective for reading dust and grit compressions. 
		Dust and grit cover every surface, and if wiped away reaccumulate after 
		a few hours. When someone or an animal walks across the dust and grit 
		(on a hard surface), their footsteps compress the dust and grit compared 
		to the surrounding undisturbed area. With sideheading (and some 
		practice) you can actually see these subtle compressions if conditions 
		are right. Here's some more photos of this particular sideheading 
		situation (which, by the way, does not illustrate dust and grit 
		compressions). |  
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