 990,373,902 visitors served. | 
|
 Dictionary/ thesaurus |  Medical dictionary |  Legal dictionary |  Financial dictionary |  Acronyms |  Idioms |  Encyclopedia |  Wikipedia encyclopedia | ? |
tube |
Also found in: Dictionary/thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia | 0.06 sec. |
tubeOr electron tube in electronics, a glass tube containing gas at low pressure, which is used to control the flow of electricity in a circuit. The electron tube valve was invented by US radio engineer Lee de Forest (1873-1961). Three or more metal electrodes are inset into the tube. By varying the voltage on one of them, called the grid electrode, the current through the tube can be controlled, and the tube can act as an amplifier. Tubes have been replaced for most applications by transistors. However, they are still used in high-power transmitters and amplifiers, and in some hi-fi systems. |
|
Printer friendly
Cite / link
Email
Feedback
? Mentioned in | ? References in periodicals archive | |
|---|---|---|
7) Placement of an endotracheal tube provides a direct pathway for these organisms to enter the lungs. At the time of surgery, an endotracheal tube with incorporated electrodes or a recurrent laryngeal nerve surface electrode plate is placed. Leaching has also been demonstrated in a study in which endotracheal tubes were found to have 6-12% less (0. |
endotracheal tube
 |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content NEW! | Linking | Lookup box | Double-click lookup | Partner with us |
|
|---|
Disclaimer |
Privacy policy |
Feedback | Copyright © 2008 Farlex, Inc.All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.