Extended Malus' Law with THz metallic metamaterials for sensitive detection with giant tunable quality factor

We study a polarizer-analyzer mounting for the terahertz regime with perfectly conducting metallic polarizers made of a periodic subwavelength pattern. We analytically investigate the influence on the transmission response of the multiple reflections which occur between polarizer and analyzer with a renewed Jones formalism. We demonstrate that this interaction leads to a modified transmission response: the extended Malus' Law. In addition, we show that the transmission response can be controlled by the distance between polarizer and analyzer. For particular set-ups, the mounting exhibits extremely sensitive transmission responses. This interesting feature can be employed for high precision sensing and characterization applications. We specifically propose a general design for measuring electro-optical response of materials in the terahertz domain allowing detection of refractive index variations as small as $10^{-5}$

KUALITAS FISIK DAN ORGANOLEPTIK DAGING SAPI DENGAN PENGGUNAAN INFUSA DAUN KARI (MURRAYA KOENIGII)

Penelitian ini bertujuan mengetahui pengaruh infusa daun kari terhadap kualitas fisik daging sapi dan penggunaan infusa daun kari terhadap warna, aroma, dan rasa. Penelitian ini menggunakan rancangan acak lengkap (RAL). Sampel daging sapi segar sebanyak 1000 gram, 35 sampel dipotong dengan perkiraan berbentuk kubus 2x2x2 cm, kemudian 20 gram sampel untuk pengujian kualitas fisik daging sapi dan dibagi menjadi 3 bagian kemudian ditambahkan infusa daun kari dengan konsentrasi 0%, 25%, dan 50%. Daging untuk pengujian organoleptik direbus pada suhu 70-80oC selama 45 menit, sedangkan pengujian kualitas fisik daging sapi dilakukan dengan cara tidak direbus. Parameter yang diamati meliputi: pH, daya ikat air, susut masak, dan organoleptik (warna, rasa, dan aroma). Hasil penelitian menunjukkan penggunaan infusa daun kari dapat meningkatkan kualitas fisik daging sapi, tetapi berpengaruh nyata

In solidarity with the computer

The idea of creating computer viruses is believed to have been outlined by science fiction writer T. J. Rhine, who in one of his books, written in the United States in 1977, described the epidemic, which is a short time spanned around 7,000 computers. The cause of the epidemic was a computer virus, which was transmitted from one computer to another, went through their operating systems and drove computers out of control of a person. In the 70's, when the book of T. J. Rain was published, the facts described in it seemed to be fantastic, and few could predict that in the late 80's the problem of computer viruses would become a reality, albeit not deadly for humanity in solidarity with the computer, but has led to some social and material losses