Exactly what it says on the tin. I have a Sound Blaster X-Fi Xtreme Audio Notebook sound card and I was measuring its output frequency using frequency counter connected to the card's output. Frequency was generated using a program called FrequencyGenerator.
This article contains information about Cathodic Protection. Cathodic Protection is an electrochemical means of corrosion control in which the oxidation reaction in a galvanic cell is concentrated at the anode and suppresses corrosion of the cathode in the same cell. Figure 1 shows a simple cathodic protection system.
Cathode rays are produced when the metal cathode has a high voltage applied to it-this has the effect of boiling the electrons off the cathode's surface producing cathode â¦ rays, and so cathode rays can be seen as a stream of electrons i.e. negatively charged particles.