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
Signs and symptoms of RSV include: Cough; Fever; Irritability; Runny nose; Sneezing; Sluggish or being inactive; Trouble breathing; Wheezing; Symptoms of RSV usually last about one to two weeks. If you think your baby may have RSV, contact her health care provider. When should you call your baby's health care provider right away? Call your baby's health care provider right away if your baby has: