The northern lights are created when charged particles carried by the solar wind hit the Earth’s atmosphere at an altitude of about 80–250 kilometres. These particles collide with oxygen and nitrogen atoms in the atmosphere, causing the atoms to release energy as light. The sun and solar...
;when引导时间状语从句;whether引导宾语从句,作doubts about的宾语。 3. But perhaps the most valuable benefit of recycling is the saving in energy and the reduction in greenhouse gases and pollution that result when scrap materials are substituted for virgin feedstock. 但回收的最大益处也许就在于能源的...
1. Light pollution filters don't work since modern light pollution is mostly LED which can't be filtered out. When you are shooting galaxies the only effective filter is driving to a darker location. 2. To stack images you should also use with your light frames, darks, flats and either ...
cross-examination- (law) close questioning of a hostile witness in a court of law to discredit or throw a new light on the testimony already provided in direct examination interrogation,interrogative,interrogative sentence,question- a sentence of inquiry that asks for a reply; "he asked a direct...
The UK government has come under fire over delays in publishing guidance that would let local authorities take light pollution into account when considering planning applications.rnSpeaking in the House of Commons, Liberal Democrat MP Lembit Opik asked why, despite a positive response to a 2003 ...
1. You may find that the extra light from your light pollution saturates the bright highlights (typically bright stars) in your subs. If so, you need to reduce your exposure times. 2. Once you get used to your own equipment and conditions, you will find it convenient to adopt a "standa...
Plastic Pollution Questions and Answers - Practice questions, MCQs, PYQs, NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions, and PDF Questions with answers, solutions, explanations, NCERT reference, and difficulty
Land Pollution Questions and Answers - Practice questions, MCQs, PYQs, NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions, and PDF Questions with answers, solutions, explanations, NCERT reference, and difficulty lev
Light Pollution C. Optimize Energy Performance D. Measurement and Verification Correct Answer(s) A. Increased VentilationC. Optimize Energy Performance ExplanationThe trade-off in this question refers to a situation where choosing one option may result in a compromise or sacrifice of another opt...
as a child i could never understand why grown-ups took dreaming so calmly when they could make such a fuss about any holiday. this still puzzles mE. i am mystified (迷惑的) by people who say they never dream and appear to have no interest in the subject. it is much more astonishing ...