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How to make a devil diver (Cartesian diver)
Find a tall glass jar with a quite wide mouth. Wrap a few turns of copper wire about the thin part of the rubber bulb from a medicine dropper. Fill the jar brim full of water. Put a little water in the bulb and float it in the jar of water. The bulb should have enough water to bring it nearly to the point of sinking. At this point approximately all the rubber will be under water. Considerable adjustment will be needed. Remove air from the bulb a bubble at a time by pinching the bulb.
A balance barometer This device depends on the fact that dry air is heavier than moist air at the similar temperature. Two equal cylinders (tin cans would do) are mounted, o
Discuss about the life on earth We can say that all life on Earth is locked in the minerals and by weathering nutrients important to life are made available. Even life in the s
Control of soil erosion: The most significant measures of erosion control include (i) growth of grasses, shrubs and trees on soils and (ii) construction of a drainage system w
Question 1. With the help of an example, explain the importance of patient preparation in CT scanning? 2. Why Radiation protection & safety aspects are necessary in a radiol
Explain Cyanosis - histotoxic hypoxia Cyanosis is a physical sign for causing bluish discoloration of the skin & mucous membranes. Cyanosis is caused by a lack of oxygen in the
Define the Mechanism of Hormone Action Hormones affect cell function either by activating cyclic AMP (Adenosine monophosphate) mechanism or by activating genes. You may recall
Explain the Closed System - Thermodynamic The system that can exchange energy with their surrounding but not the mass is known as the Closed System. So, the quantity of matter
Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi
why the atoms in neon gas do no join up in the same way that hydrogen atoms do?
Observing changes of position of the earth with respect to the sun Mark a line on the floor or the wall where the sun shines in your room. Note the exact month, day and hour. A
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