本文目录一览:
- 1、天然光源有什么?
- 2、生活中的光源有哪些?
- 3、自然光源有哪些
天然光源有什么?
自然光源有:
(1)自发光且持续发光的:恒星(包括太阳),极光,萤火虫光,夜明珠;
(2)自发光非持续的:闪电;
(3)非自发光的光源:天空光,月光。
研究生物发光的意义:
生物发光是生命活动的一种行为表现,往往与一个种的生存和繁衍有关。如许多深海鱼悬摆发光的诱饵物,以吸引饵料生物。有些虾类常分泌光雾,迷惑和逃脱敌害;齿裂虫等在繁殖季节,以其发光寻求配偶。生物性冷光有多种用途,如发光菌灯可作为火药库的安全照明。
20世纪70年代以来,生物发光监测磷酸酶、腺苷三磷酸的技术也被广泛应用。生物发光不仅具有经济的和生态学的意义,同时也是生物化学和生物物理学研究的对象。
生活中的光源有哪些?
一、常用电光源有1、白炽灯,卤钨灯---热致发光电光源;2、荧光灯,钠灯---气体放电发光电源 3、LED--固体发光电光源。
二、白炽灯:结构简单,显色性好(所谓显色性就是接近自然光或太阳光的程度。越接近显色性越好),应用在要求照度不是很高的场所。寿命1000h,应用受限,逐渐被取代。
三、荧光灯:适用于悬挂高度低,照度要求高的场所,尤其是需要正确识别色彩的场所。大部分有镇流器这个元器件,直管形荧光灯寿命10000h。
四、卤钨灯:适用于照度要求高,显色要求好,无振动场所,但是容易发热爆炸,建议用LED替代。
五、高压水银灯:
5.1外镇流式高压水银灯:省电,耐振,启动慢,电压降会熄灭,显色差。
5.2自镇流高压水银灯:省电,显色好,在施工场地或厂房应用。
六、高压钠灯:发金白光,省电,寿命长,透雾能力强,不诱虫。电压降会熄灭,适用于照度要求高,多烟尘场所,如道路、机场,码头,车站等。
七、金属卤化物灯:显色性好,电压降会熄灭,寿命短,电压降会熄灭,使用于大面积,高照度场所如繁华街道。
八、氙xian灯:显色性好,有小太阳之称,适用于大面积照明如广场,建筑工地,公园等。
九、低压钠灯:光效更高的光源,寿命最长,不炫目是太阳能路灯更佳光源。
十、LED(发光二极体):节能,寿命长,显色性低,绿色环保,耐冲击防振动等特点。
自然光源有哪些
(1)自发光且持续发光的:恒星(包括太阳),极光,萤火虫光,夜明珠(抄袭银行经理的)
(2)自发光非持续的:闪电,
(3)非自发光的光源:天空光,月光
自然光源- 毕业生报到 - 鸿海伟业生活资讯网 In 1998, when she was back in her hometown, Cho delivered a three-hour speech to 82 heads of primary...
- 苏州科技大学排名(南通大学排名) - 鸿海伟业生活资讯网 The DPRK reportedly fired a missile over Japan's northern island Hokkaido and into the Pacific Ocean...
- 军校录取分数线 - 鸿海伟业生活资讯网 About 775,000 officials have been sent to impoverished areas for poverty relief work, said the repor...
- 墙面防水怎么做(室内墙面防水怎么做) - 鸿海伟业生活资讯网 People from the DPRK and the ROK belong to the same ethnic group, and China has always supported the...
- 都江堰属于成都吗(都江堰是否属于成都) - 鸿海伟业生活资讯网 Li Jianbao, president of Hainan University,said that HAITC is the first domestic Sino-foreign cooper...
- 电视十大排行(电视十大排行榜前十名) - 鸿海伟业生活资讯网 The official Korean Central News Agency claimed it was a hydrogen bomb...
- 香港住宿 - 鸿海伟业生活资讯网 China is the top trade partner and the largest engineering project contractor of Congo...
- 楼花是什么意思 - 鸿海伟业生活资讯网 The white paper, the first after Japan's security legislation went into effect in March, played up t...
- 电视剧纸婚 - 鸿海伟业生活资讯网 Kono said Pyongyang's nuclear and missile programs have posed a practical threat to regional peace a...
- 房屋出租合同范本(租房协议书合同范本) - 鸿海伟业生活资讯网 Similarly, the ban on car horns happened overnight, and it made life so much more pleasant...
- 十大奢侈品牌排行榜(国际十大奢侈品牌排行榜) - 鸿海伟业生活资讯网 "What parties concerned should do now is to strictly and comprehensively implement UN Security Counc...
- 新车上牌多少钱(车管所新车上牌多少钱) - 鸿海伟业生活资讯网 The Chinese ambassador said enhancing bilateral exchanges is of great importance to deepen the mutua...
- 国产保温杯十大排名(中国保温杯十大排名) - 鸿海伟业生活资讯网 "We are fully prepared to implement all the Security Council resolutions, no more, no less," Cui sai...
- 个税税率表2021(综合所得个税税率表2021) - 鸿海伟业生活资讯网 HAITC is an international and innovative joint college established by Hainan University and American...
- 各航空公司标志 - 鸿海伟业生活资讯网 But Filipinos also share positive views of China and its leader, President Xi Jinping...
- 怎么交公积金(公司不交公积金个人怎么交公积金) - 鸿海伟业生活资讯网 In response to the Hatakaze's entry, the Chinese Jiangkai I-class frigate rushed into the waters, ac...
- 全马是多少公里 - 鸿海伟业生活资讯网 This represents a dramatic shift since that question was last asked in 2015...
- 显卡型号排名(影驰显卡型号排名) - 鸿海伟业生活资讯网 cn]A 31-year-old Indian in Central China's Hubei province cultivates ginger with his Chinese father-...
- 长沙山水时尚酒店 - 鸿海伟业生活资讯网 The couple was listed for the discovery of the Kaposi's sarcoma-associated herpes virus (KSHV), also...
- 成都地铁18号线(成都地铁18号线在运行吗?) - 鸿海伟业生活资讯网 It was not the first time for Lee, now an activist, to travel around the world to tell people what i...
- 朝五晚九日剧(朝五晚九日剧同人小说晋江) - 鸿海伟业生活资讯网 Cui made the remarks on the sidelines of a reception at the embassy in Washington to mark the 68th a...
- 申鹭达水龙头(申鹭达水龙头产品介绍) - 鸿海伟业生活资讯网 He added that the reason Abe cited for dissolving the lower house is not convincing, and that the pr...
- 中铁城锦南汇(中铁城锦南汇是安置小区吗) - 鸿海伟业生活资讯网 The application for UNESCO heritage status submitted by more than 10 groups from China, the Republic...
- 期货概念股(期货概念股走势) - 鸿海伟业生活资讯网 "In the past 21 years, I have witnessed great development achievements in China, and I believe the f...
- 儿童生长标准 - 鸿海伟业生活资讯网 Over the last 21 years, South Korean teacher Cho Sung-hye has contributed much to the friendship bet...
- 儿童疫苗接种(儿童疫苗接种记录查询) - 鸿海伟业生活资讯网 Lu said the joint statement, signed on Sept 19, 2005, is the most important progress in addressing t...
- 211985大学名单 - 鸿海伟业生活资讯网 China always regards Cambodia as a priority in its diplomacy with neighboring countries, said Liu, a...
- 排名前十的奶粉(排名前十的奶粉品牌是哪些) - 鸿海伟业生活资讯网 It was unforgettable because my family watched the relay in South Korea in 1988 but didn't get the c...
- 核酸检测查询 - 鸿海伟业生活资讯网 However, the prime minister has the authority to dissolve the lower chamber and call a general elect...
- 手机文件夹 - 鸿海伟业生活资讯网 "Besides, the Congolese government can adopt the most strict standards on pollution for the Chinese ...
- 各航空公司标志(各航空公司标志和代号) - 鸿海伟业生活资讯网 [Photo/Agencies]BANGKOK - Thailand's Supreme Court on Wednesday found former Prime Minister Yingluck...
- 苹果发布会时间 - 鸿海伟业生活资讯网 As all eyes are on the upcoming Congress, let's take a look at what international media said about t...
- 孝昭帝 - 鸿海伟业生活资讯网 I think China should attract even more foreigners, because from my own experience, having a look at ...
- 周末交警队上班吗(周末交警队上班吗北京) - 鸿海伟业生活资讯网 After a trial running over two years, the Supreme Court's Criminal Division for Holders of Political...
- 公路自行车(公路自行车时速一般多少公里) - 鸿海伟业生活资讯网 "The unveiling of the "comfort women" memorial, the first in a major city in the United States, whic...
- 卫生间水管安装图(卫生间水管安装图集) - 鸿海伟业生活资讯网 In 2014, the Philippines was still led by Aquino III...
- 都江堰站 - 鸿海伟业生活资讯网 It was the first primary school in the country to do so...
- 干铺法 - 鸿海伟业生活资讯网 About one-third of the college's teachers are from Arizona State University and one-third from globa...
- 中铁城锦南汇 - 鸿海伟业生活资讯网 Such an independent policy is dealing a heavy blow to those who still view the relationship between ...
- 地面防水怎么做 - 鸿海伟业生活资讯网 The two sides refuted distorted reports recently published by certain media, stressing that the fake...
- 400系列不锈钢 - 鸿海伟业生活资讯网 Half a year later, Park returned to Hefei University and has been there ever since...
- 郊区旅游(疫情北京郊区旅游) - 鸿海伟业生活资讯网 "Besides, the Congolese government can adopt the most strict standards on pollution for the Chinese ...
- 地铁停运时间(石家庄地铁停运时间) - 鸿海伟业生活资讯网 The US government, lawmakers and pundits have generally expressed negative views of Duterte since he...
- 砌墙的砖头(砌墙的砖头要浸水吗) - 鸿海伟业生活资讯网 Kottuvala Abdul Mateed from India helps his Chinese father-in-law to expand their ginger business ab...
- 电视十大排行 - 鸿海伟业生活资讯网 However, the Pew survey finds that Duterte and his policies are widely popular at home despite conce...
- 木结构建筑(木结构建筑与其他民用建筑之间,外墙上的门窗) - 鸿海伟业生活资讯网 The family's business also received local government's support, which arranged experts from universi...
- 成绵 - 鸿海伟业生活资讯网 The "Four Nos" refer to Washington's promise not to seek a regime change in Pyongyang, not to seek t...
- 燃气收费标准(燃气收费标准2022) - 鸿海伟业生活资讯网 "The family rose in importance in Shanghai from the late Qing dynasty into the twentieth century and...
- 春节是几月几日 - 鸿海伟业生活资讯网 Officials should all start from basic positions and get promotions gradually...
- 世界经济排行 - 鸿海伟业生活资讯网 "What the concerned parties should do now is to strictly and comprehensively implement UN Security C...
- 飞利浦熨斗(飞利浦熨斗喷水故障排除) - 鸿海伟业生活资讯网 Chinese and Pakistani air force personnel sit in a Pakistani fighter after a joint drill in China, S...
- 鞋码245(鞋码245是什么意思) - 鸿海伟业生活资讯网 Children cool off themselves at a wading pool in Toronto, Canada, on Sept 24, 2017...
- 高分子踢脚线 - 鸿海伟业生活资讯网 She had spoken before in front of local and national legislative bodies as well as national and inte...
- q345r是什么材质 - 鸿海伟业生活资讯网 Earlier, South Korea's weather agency said the quake is presumed to have been a natural one, the cou...
- 申鹭达水龙头 - 鸿海伟业生活资讯网 From road building to subsidies, the central government has spent large amounts of money on poverty ...
- 周末交警队上班吗(周末交警大队上班么) - 鸿海伟业生活资讯网 Society has become much more insular, and people are more focused on themselves and their toys...
- 2021开学之一课(2021开学之一课笔记) - 鸿海伟业生活资讯网 Only a short walk from the National Mall, it looks like a good place to live, work and hang out...
- q345r是什么材质 - 鸿海伟业生活资讯网 "Even the teaching building of HAITC is the same as in Arizona State University in order to enhance ...
- 利济 - 鸿海伟业生活资讯网 The Chinese officials were from China's National Narcotics Control Commission and Ministry of Public...
- 三强衣帽架(三强衣帽架Y260安装视频) - 鸿海伟业生活资讯网 In 2002, she became the first person from her country to receive China's Friendship Award, the highe...