Image
from article Carnot cycle
Carnot cycle for air. (a) Pressure-volume diagram. (b) Temperature-entropy diagram.
Search Results
Search Results
Refine this search
Search result paging links
7,354 results
Image
from article Carnot cycle
Thermal efficiency of the Carnot cycle with heat-rejection temperature Tcold equal to 500°R (278 K).
Image
from article Carnot cycle
Carnot cycle with steam. (a) Pressure-volume diagram. (b) Temperature-entropy diagram.
Image
from article Elementary particle
Fig 1. The standard model of particle physics expressed graphically, including the six types, or flavors, of quarks; the six leptons; the four gauge bosons; and the Higgs boson. (Credit: Fermilab)
Image
from article Inverse-square law
Point source S emitting energy of intensity l. The inverse-square law states that l2l2 = r22r21.
Image
from article Carbon
Image
from article Carbon
Graphene, an allotrope of carbon in which carbon atoms are arranged in a monolayer and bonded covalently forming a hexagonal structure. (Copyright © Science Photo Library/Alamy Stock Photo)
Image
from article Carbon
Carbon nanotube. (Copyright © Science Photo Library/Alamy Stock Photo)
Image
from article Electrical conductivity of metals
Schematic of a four-probe measurement of electrical conductivity. Current I is fed through the outer leads, and voltage drop V is measured on the inner leads. In this way the contact potential drop experienced by the applied current is localized at…
Image
from article Electrical conductivity of metals
Electrical conductivity of magnesium diboride (MgB2), plotted, as is customary for metals, as resistivity (ρ) versus temperature (T). The unit 10−8 Ω · m is often written as 1 micro-ohm cm or 1 μΩ-cm. Below T = 40 K = −233°C, MgB2 is a…
Image
from article Electrical conductivity of metals
Schematic energy spectrum in a metal versus a semiconductor. Filled and empty circles represent full and empty quantum states, two per level corresponding to the two spin orientations, just as in an atom. Adjacent levels are infinitesimally close…
Image
from article Electrical conductivity of metals
Resistivity ρ of Ti1−xAlx alloys as function of temperature (T) for various aluminum concentrations x. (From J. H. Mooij, Electrical conduction in concentrated disordered transition-metal alloys, Phys. Stat. Sol. (a), 17:521–530, 1973)
Image
from article Thermocouple
Basic circuit of a thermocouple.
Image
from article Ammeter
Magnetic circuit of a clip-on ammeter or current probe. B = magnetic flux density, H = magnetic field strength.
Image
from article Group velocity
One-dimensional wave packet made of two waves. (a) Maximum disturbance of wave packet at time t0 is located at x0, where crests labeled 2 coincide. (b) After time t0, wave packet has moved distance D to a position at which crests labeled 1 now…
Image
from article Nuclear explosion
The Grable nuclear explosion on May 25, 1953 at the Nevada Proving Grounds. The atomic bomb, with a yield of 15 kilotons, was fired from a 280-mm cannon, seen at right. It remains the only nuclear artillery shell tested by the United States…
Image
from article Nuclear explosion
The mushroom cloud from the first test of a thermonuclear device, code-named Ivy Mike, with a yield of about 10 megatons. Part of Operation Ivy by the United States military, Mike detonated on Elugelab island in the Eniwetok Atoll on October 31,…
Image
from article Nuclear explosion
The destruction in Hiroshima, captured in a photograph more than two months after the dropping of an atomic bomb in August 1945. (Credit: The National Archives)
Image
from article Pinch effect
Pinch pressure on a current-carrying conductor. Arrows at left show direction of pinch pressure.
Image
from article Pinch effect
Early type of ring induction electric furnace. (a) Side view. (b) Plan view.
Image
from article Pinch effect
Xenon pinched discharge in Perhapsatron torus.
Image
from article Pinch effect
Instability. (a) Sausage type. (b) Kink type.
Image
from article Pinch effect
ZT-40 reversed-field Z-pinch apparatus. 1 m = 3.3 ft. (Los Alamos National Laboratory)
Image
from article Pinch effect
Two geometries for plasma confinement systems. (a) Z pinch. (b) θ pinch.
Image
from article Solution
Fugacity and mole fraction. Line A, ideal. Line B, typical nonideal. Line C, Henry's law.
