To investigate what owls eat, scientists take apart owl pellets (owl faeces) and piece together the bones and fur from different creatures the owl has eaten.
One of the best ways of cleaning an infected wound, used before the days of antibiotics and now with infections that antibiotics can't treat, is to put maggots into it to eat the rotting flesh.
Scientific Instruments & Appliances commutator is an instrument to change of reverse the direction of an electric current. in dynamo used to convert the alternating current into direct current.
Scientific Instruments & Appliances computer is a technical device designed to find instantaneous solutions of huge and complex calculation based on the information already fed.
Scientific Instruments & Appliances mariner's compass is an apparatus for determining direction, graduated to indicate 33 directions. the "n" point on the dial indicates north pole and the "s" point, south pole.
Scientific Instruments & Appliances periscope is an apparatus for viewing objects lying above the eye level of the observer and whose direct vision is obstructed.
Scientific Instruments & Appliances salinometer is a type of hydrometer used to determine the concentration of salt solutions by measuring their densities.
Scientific Instruments & Appliances spectrometer is a type of spectroscope so calibrated as to make it suitable for the precise measurement of refractive indices.
Scientific Instruments & Appliances spring balance is used to measure the mass of a body. it is preferred only when quick but approximate determinations are to be carried out.
Scientific Instruments & Appliances stroboscope is an instrument used for viewing the objects moving rapidly with a periodic motion and to see them as if they were at rest.