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Chapter 4 - What are bounce flash, off-camera flash and power packs in flash photography?

Flash is a device which is used in the photography and produces a flash of artificial light. There are many types of flashes available today for improving the photography experience. Out of these flashes bounce flash is also known as defused light flash photography and provides outstanding results. Most of the professional photographers in their studio rarely make use of direct flash to enlighten the object and the results are very harsh, unattractive and unnatural. Most of the cameras are designed with built in flash which flashes directly at the object creating same type of harshness on the images.

By making use of bouncing flash one can reduce the harshness from the image and provide professional look. Bounce flash also helps in removal of the red eye. Bounce flash actually means process of tilting flash head up which is towards the ceiling. Lights from flash bounce back from ceiling before they actually reach the object. This type of flash produces soft and natural shadows so this is the opted method for many photographers of using flash. Bounce flash surely is appropriate for providing the natural look to the photographs.

Off camera flashes provide the most creative way of capturing the great and dramatic portraits. It is one of the terrific ways of taking images by making use of these off-camera flashes. The off camera flash is handled by the other member of the group next to the photographer. To have the right kind of lightening this off camera flash is made to hold at the angle from forty five to ninety degrees to the lens axis. Thus it provides striking light on the subjects that shows depth and the dimensions. This method provides all sorts of helpful lightening techniques that are specially required for perfect portraits.

Most of the on cameras flash power use 4 x AA batteries which together supply almost five to six volts, which the flashes scales to high voltages to the power of the flash circuitry. These flashes need high power batteries to power them. There are also external flash power packs available and are quite expansible. These external power packs allow the flash to recharge very quickly and last for fairly long time. Most of the professionals use alkaline batteries in their flash units. These allow quick recharging and have longer life than other types of batteries. There are also several other types of batteries like nickel metal hydride or nickel cadmium, both of these batteries are rechargeable and are very inexpensive.

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Chapter 4 - How do the electrical systems of an automobile work?

For a novice, a car’s electrical system is not more than cluster of wires, but in reality these small wires are a minuscule portion of large system which distributes required electricity to cater car’s need.

Automobile electrical system is both complex and sophisticated! It is inclusive of components such as battery, solenoid, starter, voltage regulator, generator or alternator and fuse panel. While battery is the ‘central heart’ of a car, other components are equally vital. A power of 12volt is formulated by battery in order to supply it to all electrical needs. This generated battery is then recharged by alternator or generator. A belt is used in order to make connection between engine and generator and is useful in generating the battery which is required for car’s working. Finally, the voltage formulated through the battery passes to the starter from where it is accessible to start a vehicle.

Battery is considered as ‘soul’ of an electrical system of an automobile as it stores all power generated and which is required for making a car move. Auxiliary apparatus such as clocks, radio and car alarm are also run with help of battery only, especially at time when engine is in still mode. Six cells are incorporated in battery which is separated for negative and positive plates through insulators. They are even immersed in electrolyte substance usually mixture of sulfuric acid and water. Alternator on other hand is useful for generating electricity which helps in running of electrical devices such as engine controls and other ignition devices. A belt drives the alternator which is connected to engine and helps in converting AC power to DC power.

Starter formulates another vital car component and is biggest power consumer. The crankshaft of engine is turned on via flywheel in order to start process of combustion and finally for starting the car. Compression within cylinders is generated as soon as process of combustion starts. While battery is used to transfer this power, solenoid is used to administer it which is furthermore controlled by ignition switch. Turning this switch on finally starts the starter motor and then the car.

Final component of car’s electrical system is fuse panel which is connected with each electrical device in an automobile. Position aside kick box, this box is inclusive of ample numbers of fuses. Such fuses protect occurrence of short circuit, overload and more greater damages as if even fire.

With a nutshell explanation of working of car’s electrical system, readers will not only able to know how it works, but will be also benefitted when next time having a car repair work. What about the cooling and lubrication system? Let’s check that as well!