A ripple tank can be used to investigate the frequency close frequencyThe number of waves produced each second. The unit of frequency is hertz (Hz)., wavelength close wavelengthThe length of a single ...
To investigate refraction in rectangular blocks and find out how it is different for different substances ...
"London: Printed by William Clowes and Sons"--Verso of t.p. About volcanos and earthquakes -- The sun -- On comets -- The wealther and weather prophets -- Celestial measurings and weighings -- On ...
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