Search results
Results From The WOW.Com Content Network
This is sometimes called the "linear diameter", and equals the diameter of a flat, circular sheet of material, usually metal, which is the right size to be cut and bent to make the dish. Two intermediate results are useful in the calculation: P = 2 F (or the equivalent: P = R 2 / 2 D ) and Q = √ P 2 + R 2 , where F , D , and R are ...
The volume ratio is maintained when the height is scaled to h' = r √ π. 3. Decompose it into thin slices. 4. Using Cavalieri's principle, reshape each slice into a square of the same area. 5. The pyramid is replicated twice. 6. Combining them into a cube shows that the volume ratio is 1:3.
A circular paraboloid is theoretically unlimited in size. Any practical reflector uses just a segment of it. Often, the segment includes the vertex of the paraboloid, where its curvature is greatest, and where the axis of symmetry intersects the paraboloid. However, if the reflector is used to focus incoming energy onto a receiver, the shadow ...
The volume of the limbs and branches can be significant. For example, the Middleton Live Oak (Quercus virginiana), height 67.4 feet, dbh 10.44 feet, crown spread 118 feet) was found to have a trunk volume of 970 ft 3 (24.5 m 3) and a branch volume of 3,850 ft 3 (109 m 3) [15] The branch volume was almost
In 1931, a 1.7 GHz microwave relay telephone link across the English Channel was demonstrated using 3.0-meter (10 ft) diameter dishes. [17] The first large parabolic antenna, a 9 m dish, was built in 1937 by pioneering radio astronomer Grote Reber in his backyard, [ 2 ] and the sky survey he did with it was one of the events that founded the ...
The force of gravity (red), the buoyancy force (green), and the resultant centripetal force (blue) In the following discussion, represents the acceleration due to gravity, represents the angular speed of the liquid's rotation, in radians per second, is the mass of an infinitesimal parcel of liquid material on the surface of the liquid, is the distance of the parcel from the axis of rotation ...
In other words, a volume form gives rise to a measure with respect to which functions can be integrated by the appropriate Lebesgue integral. The absolute value of a volume form is a volume element, which is also known variously as a twisted volume form or pseudo-volume form. It also defines a measure, but exists on any differentiable manifold ...
1.84 × 10 5: Volume of gas in the USS Macon zeppelin 2.118 90 × 10 5: Volume of gas in the Hindenburg zeppelin: 6.50 × 10 5: Volume of crude oil that can be carried aboard the Knock Nevis supertanker: 9.66 × 10 5: Volume of Taipei 101's gross floor space [5] 1 × 10 ^ 6 m 3 (1,300,000 cu yd; 0.0010 km 3) One cubic hectometre, one gigalitre ...