Galleries

Completed lever balance (Click to enlarge)

Homemade cardboard fulcrum (Click to enlarge)

Simple examples of the difference between accuracy and precision in histograms.

Photos of a "lock" testing setup, to check boats for "Panamax compliance" (Click to enlarge)

Homemade pH indicator strips tested with the vinegar and sodium bicarbonate solutions, photographed in sunlight and in the shade (Click to enlarge)

Powders after adding one drop of iodine (Click to enlarge)

Powders after adding vinegar. (Click to enlarge)

Powders after adding bromothymol blue (Click to enlarge)

Powders after adding water (Click to enlarge)