How Much Do You Know About Jammer?

What is a jammer? What does it related to? How much do you know about jammer?
1. jammer keyboard
A jammer is a new musical instrument which has two characteristics:
a. at least one isomorphic keyboard, and
b. thumb-operated and/or motion-sensing expressive controls.
The instrument is designed to be fast to learn to play, very fast to play and very expressive.
2. cell phone jammer
A cell phone jammer is an instrument used to prevent cellular phones from receiving signals from or transmitting signals to base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected.
3. swim jammer
A swim jammer is a style of swimsuit used mainly in competition to obtain speed advantages. Many manufacture this suit including Speedo, Diana, Tyr and Blueseventy. They are made of nylon and lycra/spandex material and have a form fitting design to reduce water resistance. They provide moderate coverage from the mid-waist to the area above the knee, somewhat resembling cycling shorts or compression shorts worn by many athletes.
4. Max Jammer
Max Jammer, also known as Moshe Jammer, (born April 13, 1915) is an Israeli physicist and philosopher of physics. He was born in Berlin, Germany. He studied physics, philosophy and history of Science, first at the University of Vienna, and then from 1935 at the Hebrew University of Jerusalem, where he received a PhD in experimental physics in 1942. After serving in the British Army for the rest of the war, Jammer returned to Hebrew University, where he lectured on the history and philosophy of science, before moving in 1952 to Harvard University.
5. Quentin Jammer
Quentin Tremaine Jammer (born June 19, 1979 in Angleton, Texas) is an American football player who currently plays cornerback for the San Diego Chargers of the NFL. Quentin Jammer attended Angleton High School in Angleton, Texas. In football, he was a two-time All-District safety, cornerback, linebacker, wide receiver, and quarterback as a senior, was the District Defensive MVP. He also won three letters in track and field, and participated in the long jump, 100 meter dash, and the 200 meter dash.