why the color of tube light is white?

Answer Posted / rajnish

A fluorescent lamp or fluorescent tube is a gas-discharge
lamp that uses electricity to excite mercury vapor. The
excited mercury atoms produce short-wave ultraviolet light
that then causes a phosphor to fluoresce, producing visible
light

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Define negative frequency?

571


List the parameters that should be considered for ac and dc applications.

936


Explain why fet is known as voltage control device?

575


Where we can split E1? (RRI, E1T1 & FIU)

1730


Are you familiar in Basic console / mixer programming of DBX system

1597






How many RRI we can use in One BTS?

1676


am going 2 write railway exam 4 d post of section engineer..i wnt 2 knw abt d que pattern n d previous year que papers

1676


Draw a schematic diagram of a Half Adder. Can you draw the same using only NAND gates?

583


Define what is the significance of the arrow-head in the transistor symbol?

814


i m a b.tech 2nd yr student.. i can be placed in my degree but still should i think for MBA?

1515


What is the use of excitation table in digital electronics?

559


.We want to compare the performance of a single threaded disk server with a multithreaded 1. Suppose the server takes 25 ms to receive a request for work from client, dispatch the request for processing and actual data request processing when reqd. Data is in main memory. If the reqd. Data is not in the main memory a real disk operation is needed and an additional 75 ms are reqd. On the average. On the average 25% of the clients requests access the disk. During the disk I/O period the thread waits. Assume that there is no other process in system when the server is running. How many requests can the server handle per second if its a)single threaded b)multithreaded

1470


What is the best example of digital system?

605


why do we use soft starters

1453


draw the circuit diagram of a transistor frequency convertor using a tetrode transistor?

1434