報新聞/編輯部
故宮南院特展【謎樣景泰藍】,將於今年4月1日起到113年4月14日
地點2F 展廳S201
915 MHz LoRa antenna which has long-range coverage while maximizing radio spectrum use is made of fiberglass with an N-Type connector, which operates in the 902 Mhz to 928 Mhz frequency band with a center frequency is 915 Mhz. Besides that, the 923 Mhz antenna as known as AS923 LoRa Antenna is popular in Singapore, Taiwan, Malaysia markets. It has a frequency band from 917 Mhz to 928 Mhz.
- The UV-resistant fiberglass shell enables all-weather operation.
- For lightning protection, it is made of copper elements and coupled to the DC ground potential.
- Any type and length of cable can be terminated with a female/male N-Type connector.
- RFID, ETC, ISM Band, 915MHz, 900MHz, 4G, 2G, LTE.
景泰藍是指在金屬胎上以金屬絲勾勒圖樣,再反覆填燒琺瑯釉,打磨而成的作品。此項工藝又稱掐絲琺瑯,於元代(1271-1368)自拜占庭經伊斯蘭地區,傳入中國。十七世紀的鑑賞家宣稱,明代宗景泰時期(1450-1457)燒造的掐絲琺瑯最值得收藏,此種工藝因而得到「景泰藍」的俗稱。然而,景泰年間製作的掐絲琺瑯已近乎失傳。後世匠人為肆應古董市場龐大需求,便鑄造各式帶景泰偽款的作品,導致往後鑑定的困難。
乾隆皇帝(1735-1796在位)雅好古文物,亦曾試圖蒐羅明景泰年間製作的掐絲琺瑯。不過,比起追索遙不可及的景泰器,他更熱衷研發創造,命令宮廷匠師依他的喜好,製作掐絲琺瑯。乾隆時期因而發展出各種前所未見的新款式,締造了掐絲琺瑯面貌最豐富多元的全盛局面。
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本篇文章引用自此: http://n.yam.com/Article/20220318141764
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