Image
from article Ohmmeter
Diagram of ohmmeter, showing operating principles. C1, C2 = current terminals; P1, P2 = potential terminals.
Search Results
Search Results
Refine this search
Search result paging links
8,307 results
Image
from article Ohmmeter
Special measuring probes (Kelvin clips), consisting of a set of leads with combined current probes (C1, C2) and potential probes (P1, P2).
Image
from article Cavity resonator
Closed-end sound pipe resonating (a) at the fundamental frequency f1 (the first harmonic) with wavelength λ1, and (b) at an overtone, f3 ≈ 3f1 (the third harmonic), with wavelength λ3.
Image
from article Cavity resonator
Wavemeters. (a) Wavemeter consisting of cylindrical cavity with an adjustable end-wall, resonating in the TE011 mode. The free-space wavelength λ0 corresponding to the resonant frequency f0 is given by λ0 = 2L[1 + (2L/1.64a)]− 1 2 . (b) Practical…
Image
from article Cavity resonator
Determination of the Q of a cavity resonator by (a) measuring the bandwidth and (b) measuring the damping rate of the oscillations.
Image
from article Lens (optics)
Refraction of light waves demonstrated by the disjointed appearance of a spoon entering a bowl of water, as well as the transposition of background colors due to the bowl's curvature. (Credit: Copyright © McGraw Hill)
Image
from article Lens (optics)
Illustration of a standard concave lens (left) that acts as a diverging lens and a standard convex lens (right) that acts as a converging lens.
Image
from article Learning
Lateral view of the human brain, including the primary areas of the frontal, temporal, parietal, and occipital lobes. (Copyright © McGraw-Hill Education)
Image
from article Learning
Brain activity can be recorded in various ways, from single-cell activity (top tracing) to the familiar electrical patterns ("brain waves") of an electroencephalogram (bottom tracing). (Credit: Based on an original drawing by C. Cotman and J.…
Image
from article Biofilm
Biofilms are highly structured communities of microorganisms that are surface-associated or attached to one another, and are enclosed within a self-produced protective extracellular matrix. Biofilm formation and actions involve a number of stages:…
