Search results
Results from the WOW.Com Content Network
Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Canada Modern mirror galvanometer from Scanlab. A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless ...
Thomson pioneered the theory, which was distinct from the 17th century vortex theory of René Descartes in that Thomson was thinking in terms of a unitary continuum theory, whereas Descartes was thinking in terms of three different types of matter, each relating respectively to emission, transmission, and reflection of light. [54]
The RCA Lyra X2400 is a portable audio/video recorder and player with a 3.5" LCD screen released around 2006. It has a CompactFlash slot, audio out, built-in speaker and RCA A/V inputs. [31] Recorded video is compressed with an XVID encoder. The included software, Blaze Media Encoder, can transcode from most popular video and audio formats.
All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages. Read the original article on People. Show comments. Advertisement. Advertisement.
If you opt for a Roth IRA, any withdrawals you make will be tax-free after you turn 59.5 years of age. This is the biggest reason people choose a Roth IRA, but you also don’t receive any tax ...
Your 401k is a valuable tool to help move your retirement nest egg in the right direction. While it may not be the optimal account to contribute to given your circumstances, I do think that if you ...
An early D'Arsonval galvanometer showing magnet and rotating coil. A galvanometer is an electromechanical measuring instrument for electric current.Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely.
A vibration galvanometer is a type of mirror galvanometer, usually with a coil suspended in the gap of a magnet or with a permanent magnet suspended in the field of an electromagnet. The natural oscillation frequency of the moving parts is carefully tuned to a specific frequency; commonly 50 or 60 Hz. Higher frequencies up to 1 kHz are possible.