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 the go-to traditional cure for all kinds of skin and hair problems, as well as for a variety of health issues such as joint pains and upset stomach. Castor oil has been used for as long as since the ancient Egytians to induce labour.Castor plants are mostly found in India and Africa.astor oil has a lot of health benefits for the body, and not just for the skin. It helps with joint and muscle pain, relaxing muscle tension, digestion and blood circulation. These qualities make it ideal to be used in massage therapy.