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.
Science Facts
Many tribes around the world have practised trepanning since the Stone Age. It involves drilling a hole in the skull, often with a stone, to ease headaches by letting out evil spirits. People frequently survived, as many skulls have been found with several such holes, some partially healed. .. More >>