Engineers blogsite

Google adsense is a legit and reliable advertising program. There is no confusion for its payout. Now a day thousands of people are using adsense in their website. Everyone wants to earn from adsense. Some of us can earn and some can’t. The reasons of this variation are many. Only he can earn huge amount of money from Google adsense who knows some tricks.

I am discussing about  adsense tricks . You can say this is of them are google adsense secrets. In previous post I discussed about an amazing plugin which shows ads after or before post very simply with no labour.

Now I am discussing about how to make google ads qualityful.

Simply we put adsense ads with our desire color for adsense advertising. If you put ads color according to your website’s theme or template, you will get good result. You have to put ads color base on your website’s color. When visitor will come in your website, he will not confirm that which link is for ads and which is for content’s link. You can get more clicks applying this method. You can make same color of ads as your theme or template. Look first image, there is a poor color combination between adsense ads and theme. View second image this guy made good color combination according to his theme. It is difficult to identify which are adsense ads for new visitors.

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Tips for  bloggers

We make our blog spending valuable time. Everyone knows that copy scape free articles are legit and favorite to the visitors. To take the concentration of the visitors blog writes do hard labor. Generally it is happened. A few numbers of people who copy articles from another blog and paste it in their blog. It is a crime also. This post is for those blogger who explain their own ideas with their own words. Mainly for unique article writers.

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Electricity introduction

We can easily say electricity is the foundation and key of modern civilization. Without electricity we can not think even about modern civilization. The extensive use of electricity and tremendous application is evident in our daily life. Every essential electronic machine fans, trains, trams, industries, factories are run by electricity. Our houses are lighted by it. Radio, television, telephone, computer etc. can work with electricity. Now the main question is what is electricity- energy or matter?

No matter is present in electricity.

So, it is clear that from definition electricity is form of energy.

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This post is divided into three parts this is part 3 to view part 1 click here and to view part 2 click here.

# Fiber optic communication

Physical Description:

An optical fiber is a thin (2 to 125 pm), flexible medium capable of conducting an optical ray. Various glasses and plastics can be used to make optical fibers. The lowest losses have been obtained using fibers of ultra pure fused silica. Ultra pure fiber is difficult to manufacture; higher-loss multi component glass fibers are more economical and still provide good performance. Plastic fiber is even less costly and can be used for short-haul links, for which moderately high losses are acceptable.

An optical fiber cable has a cylindrical shape and consists of three concentric sections: the core, the cladding, and the jacket (Figure 13.4)T. he core is the innermost section and consists of one or more very thin strands, or fibers, made of glass or plastic. Each fiber is surrounded by its own cladding, a glass or plastic coating that has optical properties different from those of the core. The outermost layer, surrounding one or a bundle of cladded fibers, is the jacket. The jacket is composed of plastic and other material layered to protect against moisture, abrasion, crushing, and other environmental dangers.

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This post is divided into three parts this is part 2 to view part 1 click here and to view part 3 click here.

# Guided transmission media:

For guided transmission media, the transmission capacity, in terms of either data rate or bandwidth, depends critically on the distance and on whether the medium is point-to-point or multipoint, such as in a local area network (LAN). Table 3.1 indicates the type of performance typical for the common guided medium for long distance point-to-point applications; The three guided media commonly used for data transmission are twisted pair,

coaxial cable, and optical fiber (Figure 13.3). We examine each of these in turn.

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Transmission medium is the physical path between transmitter and receiver in a data transmission system. Transmission media can be classified or unguided. In both cases, communication is in the form of electromagnetic waves. With guided media, the waves are guided along a solid medium, such as copper twisted pair, copper coaxial cable, and optical fiber. The atmosphere and outer space are examples of unguided media that provide a means of transmitting electromagnetic signals but do not guide them; this form of transmission is usually referred to as wireless transmission systems.

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4) Star Topology:

In the star LAN topology, each station is directly connected to a common central node. Typically, each station attaches to a central node, referred to as the star coupler, via two point-to-point links, one for transmission and one for reception. In general, there are two alternatives for the operation of the central node. One approach is for the central node to operate in a broadcast fashion.

A transmission of a frame from one station to the node is retransmitted on all of the outgoing

links. In this case, although the arrangement is physically a star, it is logically a bus; a transmission from any station is received by all other stations, and only one station at a time may successfully transmit. Another approach is for the central node to act as a frame switching device. An incoming frame is buffered in the node and then retransmitted on an outgoing link to the destination station.

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The basic types of network topology as shown in fig 12.1. For the physical layer, we confine for to an introduction of the basic LAN topologies. The common topologies for LANs are bus, tree, ring, and star (Figure 12.1). The bus is a special case of the tree, with only one trunk and no branches; we shall use the term bus/tree when the distinction is unimportant.

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