id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
american_scientific_journal-6736	Julião , Cícero 	Optical Phenomena in Time Dependent Medium	2021	10	.pdf	application/pdf	3253	262	64	The consequence of such waves is the possibility of permissible and prohibited bands for wave vectors in the propagation of electromagnetic waves [11]. Section 4 give us an example of wave propagation inside an active medium.	cache/american_scientific_journal-6736.pdf	txt/american_scientific_journal-6736.txt