camera obscura invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
camera obscura invented	1.34	0.9	9206	26	23
camera	0.18	0.5	8277	49	6
obscura	0.11	0.2	7843	58	7
invented	1.76	0.8	9497	67	8

Keyword	CPC	PCC	Volume	Score
camera obscura invented	1.65	0.3	1202	83
camera obscura invented year	0.09	0.9	9815	28
camera obscura inventor	0.5	0.2	5214	63
camera obscura invention date	0.44	0.1	274	8
camera obscura inventeur	1.13	1	7325	76
when was the camera obscura invented	0.76	0.5	7700	89
who invented the camera obscura	0.15	0.7	3530	80
when was camera obscura first invented	0.82	0.8	8893	36
was camera obscura the first camera invented	0.27	0.9	372	47
what year was the camera obscura invented	1.85	0.2	9080	26
where was the camera obscura invented	1.97	0.8	1185	9