Brother has covered the heater vents with the play silks to capture air or "make bubbles".
Downstairs in the older, colder part of the house.
Upstairs in the warmer, newer part of the house.
He is noticing that the play silks in the down stiars portion of the house become flat as soon as the heater turns off, but the play silk upstairs stays full of air. He has even theorized that the reason is because the upstairs surrounding air is much warmer than the downstairs. I'm so impressed with his observation and reasoning skills.
2 years ago