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Pramugari (untuk wanita) adalah staf/karyawan perusahaan pengangkutan umum (baik udara, darat, dan laut) yang bertugas melayani penumpang. Fungsi keduanya adalah melayani penumpang dan kenyamanan mereka. Walaupun pada awalnya dalam bahasa Indonesia istilah ini diperuntukkan untuk semua jenis pengangkutan umum, tetapi kemudian istilah ini mengalami penyempitan makna sehingga dan istilah pramugari disepadankan hanya untuk staf perusahaan penerbangan saja.

Para pramugari dan pramugara selama dalam perjalanan penerbangan secara bersama-sama merupakan awak kabin yang tugas intinya adalah menjaga keselamatan para penumpang di pesawat dan melayani kebutuhan penumpangnya atau biasa disebut serving, sementara para pilot (di kokpit) dan para teknisi memperhatikan aspek-aspek teknis penerbangan.

Tanggung jawab utama para awak penerbangan adalah keamanan penumpang dan siap siaga dalam keadaan darurat. Hal ini diikuti dengan tugas rutin pelayanan penumpang seperti menyediakan makanan dan minuman di pesawat, dan memenuhi kebutuhan individual para penumpangnya.

Nah, sebagaimana juga para penumpang, pramugari-pramugari yang umumnya cantik ini juga butuh istirahat kala menjalankan tugasnya. Berikut ini kabin tempat pramugari istirahat bila kelelahan dalam menjalankan tugas.

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Human desire is to see objects not visible to the naked eye, appears not to be a problem at this time. As a concrete example, hobbies watching movies can be an opportunity to meet people who want to peek desire other people's lives.
Therefore, the scientific world continues to have an adventure to solve the demands of human life through the development of equipment that can be translucent. South Korea has recently succeeded in developing a camera that can break through the invisibility both inside clothing or objects in the fog. Development of millimeter wave camera for the second time in the world
A South Korean research institute on 19 October in the city of Yongin, Kyeonggi province, held a presentation about the ability of Mirae, Millimeter-Wave Imaging Radiometer Equipment, or a type of camera that can detect millimeter wave so transparent.

In the presentation, Mirae managed to capture the exact position and outline of a car that is behind a thick screen. Meanwhile, regular camera and infrared camera failed to capture the position and outline of the car. In addition, the transparent camera capable of taking images of real objects that are in the flames and smoke of fire and managed to detect a pistol hidden in clothing. According to the agency, they successfully developed the transparent camera after devoting his efforts during the last 3 years. This is the second success in the world.

Secrets of millimeter waveMillimeter wave is the key to the development of invisibility camera. The theory of invisibility implement the use of light waves outside the visible area that can not be seen or felt by humans. Through the process of millimeter wave image looks relatively long compared with the wave of visible light and infrared light, we can see objects that are in a state of vague due to the barrier.

Millimeter wave camera can take images of objects, through the acceptance of millimeter waves emitted directly from the object it naturally. The use of these cameras do not cause negative impacts to human health. Is the infrared camera and X-rays that have been long used in human life, capable of invisibility?

Rays that can penetrate the barrierWe are able to see through the opaque infrared rays changes emitted from our bodies naturally into visible light, such as infra red cameras, although we can not see objects beyond the range of infrared and ultra violet rays. Infrared rays have wavelengths can penetrate both cloth armor and darkness to find the position of the object. The function is now applied to smooth SAR activities. Plus, X-rays at the aerodrome is used to detect what is hidden in clothing or behind the human body in order to prevent the things that are not expected in the protection of passenger safety.

In a recent edition, the British science magazine, New Scientist introduces 10produk science that can change the pattern of human life on a large scale in the next 30 years. In such products, there are tools we can use to see an object that is hidden, like a Superman.

In other words, the world of international science and technology now make every effort to develop invisibility technology. University of Utah research team, the United States has developed technology that can pursue and capture the movements of people or objects behind a thick wall with a radio transmitter without wires, by applying a vertical image retrieval method without the cable, or RTI.

U.S. army also managed to develop LifeReader technology, namely wireless equipment that can monitor heart rate and breathing at the same time against a group of humans. Plus, an advanced technology was also developed to transfer the information collected by mini digital camera on glasses worn by blind people to electrodes implanted in the tongue that are visually impaired. By inference, the time soon, the development of science.

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