We made some invisible paintings, dipping paintbrushes into lemon juice. We tried to get them to appear by heating them in the sun, but that wasn't warm enough. Instead, we found out that putting them in the oven at 350 degrees for about 5 minutes made them show up quite well. Jr. scientist A was quite proud of his now-visible paintings and decided to put them up on the fridge (o.k., the picture above was mine, which Jr. scientist A didn't deem good enough to put on the fridge!).
Sunday, March 20, 2011
Invisible paintings
We made some invisible paintings, dipping paintbrushes into lemon juice. We tried to get them to appear by heating them in the sun, but that wasn't warm enough. Instead, we found out that putting them in the oven at 350 degrees for about 5 minutes made them show up quite well. Jr. scientist A was quite proud of his now-visible paintings and decided to put them up on the fridge (o.k., the picture above was mine, which Jr. scientist A didn't deem good enough to put on the fridge!).
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