A rheostat is a device which is used to vary the resistance in an electrical circuit without interrupting the circuit.heostats are a kind of potentiometer. These devices can be used in a variety of settings, and are usually designed to be sealed so that environmental factors cannot interfere with the function of the circuit.
This chemical can cause allergic rhinitis and its symptoms, including a runny nose, sneezing, and itchy eyes. In addition to tree pollen, other common allergens include: grass pollen
Rhinitis means inflammation of your nose. Common symptoms include sneezing, a blocked or congested nose, a runny nose (watery discharge) and an itchy nose. Less common symptoms include itchy throat, loss of smell, face pain, headache and itchy and watery, red eyes. The most common cause of rhinitis is a cold. Hay fever is another common cause.