User talk:2409:4060:408:9715:0:0:324:68B0

February 2020
Please stop your disruptive editing. If you continue to vandalize Wikipedia, as you did at Young's interference experiment, you may be blocked from editing. userdude 06:15, 27 February 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.