yes, air weighs .075 per cubic feet
Imago Scientific Instruments was created in 1999.
No, air is a concrete noun because it is made up of molecules that can be seen, weighed, measured by scientific means even if you can't see it with the naked eye.
The noun air is a concretenoun because it is made up of physical molecules that can be weighed and measured by scientific means even if you can't see it with the naked eye.
The telescope, the microscope and navigational instruments were invented in the scientific revolution.
The telescope, the microscope and navigational instruments were invented in the scientific revolution.
Examples of scientific instruments include microscopes, spectrophotometers, telescopes, mass spectrometers, and DNA sequencers.
an air conditioner would be best weighed in pounds
The noun 'air' is not an abstract noun. The word 'air' is a concrete noun because it is made up of physical molecules that can be seen, weighed, measured by scientific means even if you can't see it with the naked eye.
Gerard L'Estrange Turner has written: 'Nineteenth Century Scientific Instruments' -- subject(s): Scientific apparatus and instruments, Handbooks, manuals, History 'God bless the microscope!' -- subject(s): History, Microscope and microscopy, Royal Microscopical Society (Great Britain) 'Elizabethan instrument makers' -- subject(s): Scientific apparatus and instruments, History, Scientific apparatus and instruments industry, Catalogs 'Antique scientific instruments' -- subject(s): Scientific apparatus and instruments, Collectors and collecting
Scientific instruments are tool used to aid people in scientific experimentation, measurements, etc. Some examples would be a thermometer, barometer, seki dish.
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The correct spelling is instruments (scientific or musical devices).