A potometer measures how factors such as light, temperature, humidity, light intensity and wind will affect the rate of transpiration. The main type of potometer is the 'bubble' potometer shown in Figure Figure 6.
Physicians recommended against the practice because they did not want medicines associated with punishment. A heavy dose of castor oil could be used as a humiliating punishment for adults, especially political dissenters. Colonial officials used it in the British Raj (India) to deal with recalcitrant servants. Belgian military officials prescribed heavy doses of castor oil in Belgian Congo as a punishment for being too sick to work.
Castor oil is also used as a food additive and flavoring agent, mold inhibitor, skin product and cosmetic ingredient, and in manufacturing plastics, rubbers, synthetic resins, fibers, paints, and similar products.In modern medicine, the reported therapeutic uses of castor oil have been categorized into:otential Side Effects of Castor Oil. The use of castor oil is not without any adverse effects, which are usually skin reactions and gastrointestinal irritations. Dr. Mercola explains that when castor oil reaches your small intestines, it is broken down into ricinoleic acid, which can irritate your intestinal lining.