Silas Ellsworth Coleman. EXERCISE 42. THE REFLECTION OF ... Two large glass or tin tubes, 2 to 3 ft. long ; screen or other vertical plane surface to serve as a reflector; roll of cotton or soft cloth ; watch. a. Lay the tubes on the table so as to anbsp;...
|Title||:||Physical Laboratory Manual for Secondary Schools|
|Author||:||Silas Ellsworth Coleman|