Changes

I helped Liana bring two-by-fours to and from Dave Perry's workshop for him to cut. The wood was to keep the sides of the fish tank from bowing inwards.

I helped Liana bring two-by-fours to and from Dave Perry's workshop for him to cut. The wood was to keep the sides of the fish tank from bowing inwards.

Friday June 20: I helped Liana and Aaron test fibers with the pulser. We had intended to do measurements on several bundles, but our test results were not useful, so we had to continue testing. When we randomly changed the positions of fibers in the bundle, the light transmission changed significantly in some of them. Also, when we repeated tests in situ, transmission decreased. Dr. Jones suggested that the position of the fibers in the chimney channels varies from run to run. He thought the decreasing transmission could be the result of increasing temperature as the electronics heat up.

Friday June 20: I helped Liana and Aaron test fibers with the pulser. I sorted the fibers and handed them to Liana as she was bundling them. I also held them when necessary.

 

We had intended to do measurements on several bundles, but our test results were not useful, so we had to continue testing. When we randomly changed the positions of fibers in the bundle, the light transmission changed significantly in some of them. Also, when we repeated tests in situ, transmission decreased. Dr. Jones suggested that the position of the fibers in the chimney channels varies from run to run. He thought the decreasing transmission could be the result of increasing temperature as the electronics heat up.

June 21: Liana and I were getting zeros when we tested fibers. Apparently the problem was that I briefly put the contacts against the wrong battery terminals.

June 21: Liana and I were getting zeros when we tested fibers. Apparently the problem was that I briefly put the contacts against the wrong battery terminals.

I cleaned the lab bench where the band saw and drill press are after Dr. Jones used the saw. I put some tools that were on the bench in the tool box there.

I cleaned the bench where the band saw and drill press are after Dr. Jones used the saw. I put some tools that were on the bench in the tool box there.