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Updated: May 31, 2025
If you have to use the same garden ground continuously, the plants which you mention should be rotated with root crops or with other kinds of vegetables, so as to frequently change plants and soil within the general area which has to be used for them. Big Worms on Tomatoes.
Not the least of the mechanical questions was settled by Edison's decision to make this tremendously long kiln in sections of cast-iron, with flanges, bolted together, and supported on rollers rotated by electric motors.
He had been about to cut off power and coast for the beach; but now he veered suddenly to eastward again, rotated the rising-plane, and brought the Pauillac up at a sharp tilt. Banking, he advanced the spark a notch; the engine shrilled a half-tone higher, and with increased speed the aero lifted them bravely in a long and rising swoop.
Now, before there were any planets at all or any sun, in the place of our solar system was a vast gaseous cloud called a nebula, which slowly rotated, and this rotation was the first impulse or force which God gave it. It was not at all dense, and as it rotated a part broke off, and inheriting the first impulse, went on rotating too.
The large tube is now taken in the left hand, the small one in the right, the ends heated and joined in the usual manner, taking care not to get any larger lump at the joint than necessary. A small flame is now directed on the cone at right angles to its elements as before, and the tube rotated so as to heat the whole circumference.
In fact, the braking effect of tidal friction varies inversely as the sixth power of the distance, so that the ability of the earth to stop the rotation of the moon on its axis is immensely greater than that of the sun. This power was effectively applied while the moon was yet a molten mass, so that it is probable that the moon has rotated just as it does now for millions of years.
The hands must be held steady, and the tube must be under good control at all times, so that both ends may be rotated at the same angular velocity, even though they may be of different diameters, and the tube be neither drawn apart nor pushed together unless such a motion is expressly desired, as it sometimes is.
In the big balloon now happily following the wheel at the end of its tether, the still-undamaged power-off fail-safe went into operation. The mirror surface behind each ruby rod rotated into its shielding position, dispersing the energy that the huge mirror directed towards the rods, back into space. Hot Rod was secure. Mike received only one further communication from the captain. "Mr.
Modern scientific management, horrified at the waste of time and energy, makes accurate knowledge take the place of this random, helter-skelter, hit-or-miss basis of action and multiplies profits. If the old-time farmer rotated his crops at all, he did it at random.
But it had been found that the alternating fortnights of boiling heat and near-absolute-zero cold on the lunar surface could play havoc with the delicate instruments used in certain researches. Hence Wheel Five had been built and was staffed by research men who were rotated at regular eight-month intervals. Kieran loved it, from the first.
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