Vol. 5. Elsevier Scientific Publishing Company > 자유게시판

A fly-killing system is used for pest management of flying insects, reminiscent of houseflies, wasps, moths, gnats, and mosquitoes. 10 cm (four in) throughout, connected to a handle about 30 to 60 cm (1 to 2 ft) lengthy fabricated from a lightweight materials corresponding to wire, wooden, plastic, or steel. The venting or perforations minimize the disruption of air currents, that are detected by an insect and allow escape, and likewise reduces air resistance, making it easier to hit a fast-shifting target. The flyswatter often works by mechanically crushing the fly towards a tough floor, after the user has waited for the fly to land somewhere. However, customers can also injure or stun an airborne insect mid-flight by whipping the swatter through the air at an extreme velocity. The abeyance of insects by use of quick horsetail staffs and electric bug zapper followers is an historical follow, courting again to the Egyptian pharaohs.

The earliest flyswatters were in reality nothing greater than some sort of putting surface hooked up to the end of an extended stick. An early patent on a business flyswatter was issued in 1900 to Robert R. Montgomery who referred to as it a fly-killer. Montgomery offered his patent to John L. Bennett, a rich inventor and industrialist who made additional improvements on the design. The origin of the title "flyswatter" comes from Dr. Samuel Crumbine, a member of the Kansas board of well being, who needed to raise public awareness of the health issues attributable to flies. He was impressed by a chant at a local Topeka softball game: "swat the ball". In a well being bulletin revealed quickly afterwards, he exhorted Kansans to "swat the fly". In response, a schoolteacher named Frank H. Rose created the "fly bat", a machine consisting of a yardstick hooked up to a piece of display, which Crumbine named "the flyswatter". The fly gun (or flygun), a derivative of the flyswatter, uses a spring-loaded plastic projectile to mechanically "swat" flies.

Mounted on the projectile is a perforated circular disk, which, based on advertising copy, "won't splat the fly". Several comparable merchandise are offered, largely as toys or novelty objects, although some maintain their use as traditional fly swatters. Another gun-like design consists of a pair of mesh sheets spring loaded to "clap" together when a trigger is pulled, squashing the fly between them. In distinction to the traditional flyswatter, such a design can solely be used on an insect in mid-air. A fly bottle or glass flytrap is a passive lure for flying insects. In the Far East, it's a big bottle of clear glass with a black steel prime with a hole within the middle. An odorous bait, akin to pieces of meat, is placed in the bottom of the bottle. Flies enter the bottle seeking food and are then unable to flee because their phototaxis conduct leads them anyplace within the bottle besides to the darker high the place the entry gap is.

A European fly bottle is extra conical, with small ft that increase it to 1.25 cm (0.5 in), with a trough about a 2.5 cm (1 in) broad and deep that runs inside the bottle all around the central opening at the bottom of the container. In use, the bottle is stood on a plate and electric bug zapper a few sugar is sprinkled on the plate to draw flies, who eventually fly up into the bottle. The trough is full of beer or vinegar, into which the flies fall and drown. Prior to now, the trough was sometimes stuffed with a harmful mixture of milk, water, and arsenic or mercury chloride. Variants of those bottles are the agricultural fly traps used to fight the Mediterranean fruit fly and the olive fly, which have been in use because the 1930s. They're smaller, with out feet, and the glass is thicker for tough outdoor usage, typically involving suspension in a tree or bush. Modern versions of this device are sometimes fabricated from plastic, and could be bought in some hardware shops.