How many of these circular objects can you name? The radius (or ‘radii’ for plural) is the length of a straight line from the centre of the circle to its circumference. All radii of a circle ...

The Journal of Infectious Diseases, Vol. 30, No. 1 (Jan., 1922), pp. 58-63 (6 pages) The human tubercle bacillus grows equally well on culture tubes containing slants of glycerol agar or egg medium ...

The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius. Many scientists worked on the ...