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.
History Facts
The earliest cosmetic surgery was practised by doctors in India who made fake noses for criminals who had their noses cut off as a punishment for their crimes. .. More >>