Senin, 28 September 2009

Utilizaton of light

Utilization of light for fishing tool is done by using the physical properties of artificial light itself. The entry of light into the water, is closely related to the wavelength of light emitted by them. The greater the wavelength the smaller the power tembusnya into waters.

Other factors that also determine the entry of light into the water is the absorption (absorption) of light by water particles, brightness, reflection of light by the sea, season and geographic latitude. Given these obstacles, the value of illumination (lux) a source of light will decrease with the increasing distance from the light sources.

With the physical properties owned by the light and the tendency of fish behavior in response to the light, fishermen and creating artificial light to fool the fish, so do a certain behavior to facilitate in fishing operations. Relation of fish behavior in response to the light source is often used by fishermen is the tendency of fish to gather around sources of light.

For the purpose of fish in the area attract the widest possible, fishermen are usually turned on the light that glowed blue in the early penanggkapannya operations. This is because blue light has the shortest wavelength and penetrate into the most distant relative water than other colors of visible light, so that both vertically and horizontally the light is able mengkover a relatively large area compared to other sources of visible light.

After the fish are interested in approaching the light, the fish were then collected until the range of fishing equipment (catchability area) by using the light of the relatively low frequency, gradually. Red light used in the final stages of catching fish.

In contrast to blue light, red light has a wavelength between the relative length of visible light, has a cruising range is relatively limited. Thus, the fish are beginning to be away from the light source (ship), with the changing colors of light sources, come closer to the light source in accordance with the penetrating power of red light. After the fish collected near the boat (fishing areas fishing equipment), new fishing gears and the gang locked in character as purse seine fishing, stock or operated lift nets and confining the movement of fish. With the restrictions on the movement of fish, then fishing operations will be easier and higher achievement score.

Tidak ada komentar:

Posting Komentar

Custom Search