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- Jun 25, 2020
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We have a two-pane insulated sliding glass door in our living room. As the house cools down during the early evening, the door will make a single loud snapping sound. I assume this sound is from thermal expansion/contraction of the door. The sound happens only once a night.
Last night I was sitting in my living room chair in the dark. I was staring out the sliding glass door into the darkness. The door snapped and I saw a small flash of light at the exact same time. The flash of light was small, about the size of a playing card and it appeared in the center of one of the sliding glass doors. The light was dim. Again, both the light and snapping sound came at the exact same time. Weird. Do you suppose that thermal contraction/expansion of argon-filled, double pane glass creates some kind of static electricity that can cause a flash of light?
Last night I was sitting in my living room chair in the dark. I was staring out the sliding glass door into the darkness. The door snapped and I saw a small flash of light at the exact same time. The flash of light was small, about the size of a playing card and it appeared in the center of one of the sliding glass doors. The light was dim. Again, both the light and snapping sound came at the exact same time. Weird. Do you suppose that thermal contraction/expansion of argon-filled, double pane glass creates some kind of static electricity that can cause a flash of light?