In 1921, research at Wesleyan led to development of the first circuit to control frequencies based on a quartz crystal resonator. This technique was later applied in standards of frequency as a filter and for coupling between circuits. Piezoelectric quartz oscillators advanced ultrasonics, sonar, radar, and myriads of other electronic applications. They appeared in everyday life through their use in quartz wristwatches.The plaque is placed at Wesleyan University, Middletown, CT where Cady did his research.
Milestone dedication held on November 5th 2020
The Milestone dedication ceremony honoring Walter Guyton Cady for the Piezoelectric Quartz Resonator was held virtually on November 5th 2020 with 130 attendees.
WALTER GUYTON CADY
PIEZOELECTRIC QUARTZ RESONATOR, 1921-1923