A prepositional phrase is a group of words that starts with a preposition and ends with the object of the preposition (a noun, pronoun, or noun phrase). Let's look at some s â¦ teps to identifying prepositional phrases. prepositional phrase is a group of words that starts with a preposition and ends with the object of the preposition (a noun, pronoun, or noun phrase). Let's look at some s â¦ teps to identifying prepositional phrases.
This surgery can be done through small incisions using a thin, lighted scope with a camera on the end (a laparoscope). This is called a laparoscopic hysterectomy. In robotic-assisted laparoscopic hysterectomy, the surgeon uses a computer to control the surgical instruments. The computer station is in the operating room. The surgeon is able to control the robot's movements steadily and precisely.
Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity. 1  Mechanical hygrometers make use of the principle that organic substances (particularly finer substances such as goldbeaterâs skin [ox gut] and human hair) contract and expand in response to the humidity. Contraction and expansion of the hair element in a mechanical hygrometer causes the spring to move the needle on the dial.