Catch-Ball

The ball catch with flash in Figure 5.40 is formed by an expanding core. The flash elimination in expanding cores is always very complex because it has to be coordinated in three dimensions. If the undercuts can be shaped with simple sliders, this soiution should be preferably chosen. 

When a catcher catches a fastball, the kinetic energy lost by the ball shows up as thermal energy of the glove and the ball. This increase in thermal energy results in a higher temperature. 

In terms of the visual clarity of its presentation, biochemistry has still to catch up with anatomy and physiology. In this book, we sometimes use simplified ball-and-stick models instead of the classical chemical formulae. In addition, a number of compounds are represented by space-filling models. In these cases, we have tried to be as realistic as possible. The models of small molecules are based on conformations calculated by computer-based molecular modeling. In illustrating macromolecules, we used structural infor-... 

Fig. 12.3. STM with a double-action lever. Various parts are shown in (a) (A) The macor block onto which the x, y piezo bars (horizontal) and the z piezo bar (vertical) are mounted, (B) the microscope base plate, (C) carriage rod, actuated by a linear feedthrough and a lead screw, (D) stop, (E) ball bushing assembly, (F) lever, (G) sample and sample holder, (H) catch, the pivot point for coarse motion, (I) foot, the pivot point for fine motion, and (J) the probe tip assembly, (b) Shows the STM in coarse motion. Using the catch as the pivot point, the sample can be removed away from the tip. (c) Shows the STM in fine motion. Using the foot as the pivot point, the linear motion of the carriage rod is reduced by a large factor. (After Demuth et al., 1986a.)...

You catch the bone with a deft flick of your wrist and toss it onto a chair. You reach into a cabinet and remove two tennis balls. 

The neutron is a better hammer than the alpha particle for smashing nuclei. Being electrically neutral, it encounters no electrostatic barrier to penetrating the nucleus. Indeed, slow neutrons often And their way into nuclei more efhciently than fast ones, much as a slow cricket ball is easier to catch. So the discovery of the neutron, in the eyes of the veteran nuclear physicist Hans Bethe, marked a turning point in the development of nuclear physics. 

Once my sister Katherine knew I was ready, she thrown the ball at me so I could practice catching it with... 

In every redox reaction, at least one element undergoes reduction while another undergoes oxidation. Just as a successful pass in football requires a quarterback to throw the ball and a receiver to catch it, a redox reaction must have one element that gives up electrons and one that accepts them. The electronic structure of both reactants changes during a redox reaction. 

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