when was the prism invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the prism invented	0.47	0.9	9361	11	27
when	0.65	0.8	4167	7	4
was	0.36	0.4	8329	99	3
the	0.04	0.2	4749	15	3
prism	0.25	0.1	7128	31	5
invented	1.07	0.4	1876	49	8

Keyword	CPC	PCC	Volume	Score
when was the prism invented	1.65	0.1	7763	50
who invented the prism	0.43	0.7	9028	87
who discovered the prism	0.6	0.6	5134	58
when was prism released	0.47	0.7	8811	27
information about the prism	0.85	0.6	5904	11
first scientist to use glass prism	1.43	0.4	3479	1
interesting facts on the prism	0.87	0.8	651	31
what is the prism	1.13	0.9	7612	34
prism in the beginning fabric	1.19	0.1	9771	47
how is a prism made	1.54	0.3	7674	8
prism name meaning and history	0.02	0.3	6213	14
what is prism technology	1.43	0.6	9416	82
how are prisms named	1.9	0.8	1807	55
what is prism in science	1.12	1	7679	12
what makes a prism	0.59	1	8628	65
derivation of prism formula	0.27	0.2	1219	74
antique prisms for sale	1.25	0.7	5370	41