Assertion: laser | /r/HasProperty | invented by townes
Facets:
Source sentences:
text: The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years.
text: The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years.
text: The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years.
text: The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years.