標題: Titlebook: How to Observe the Sun Safely; Lee Macdonald Book 20031st edition Springer-Verlag London 2003 Astronomy.Observational.Sun.Sunspot.solar [打印本頁] 作者: Hemochromatosis 時間: 2025-3-21 19:54
書目名稱How to Observe the Sun Safely影響因子(影響力)
書目名稱How to Observe the Sun Safely影響因子(影響力)學科排名
書目名稱How to Observe the Sun Safely網絡公開度
書目名稱How to Observe the Sun Safely網絡公開度學科排名
書目名稱How to Observe the Sun Safely被引頻次
書目名稱How to Observe the Sun Safely被引頻次學科排名
書目名稱How to Observe the Sun Safely年度引用
書目名稱How to Observe the Sun Safely年度引用學科排名
書目名稱How to Observe the Sun Safely讀者反饋
書目名稱How to Observe the Sun Safely讀者反饋學科排名
作者: Nebulizer 時間: 2025-3-21 20:51 作者: Tartar 時間: 2025-3-22 01:26
Solar Drawings and Position Measurements,tatistics, as I shall describe in Chapter 5. Photography and CCD imaging are in theory more accurate than drawing, but they are less practical, for several reasons. It is not as easy to define the cardinal points (north, south, east and west) on a photographic image as accurately as on a good drawin作者: 天賦 時間: 2025-3-22 07:08
Measuring Solar Activity,t done by counting the number of sunspots and/or sunspot groups visible on the Sun’s disc each day. Other methods of measuring solar activity are used by professional observatories, but counting is the only one that is practical for the amateur. Sunspot counts are very useful in monitoring the Sun’s作者: 評論性 時間: 2025-3-22 08:45
Observing the Sun in Hydrogen-Alpha,housand kilometres thick, and the corona, which consists of rarefied but extremely hot gas extending millions of kilometres out into space. Both layers are invisible to the Earth-bound observer in ordinary circumstances, because the brilliant light of the photosphere is scattered by the Earth’s atmo作者: 膽汁 時間: 2025-3-22 14:06
Solar Photography,ugh, as I have explained in Chapter 4, it is very difficult to do accurate positional measurements using photographs. Nevertheless, photographs of the Sun’s full disc are excellent for showing what was visible on the Sun on a particular day and show the appearance of the Sun’s features far more real作者: 危險 時間: 2025-3-22 18:58 作者: 為寵愛 時間: 2025-3-22 22:13
per airway palate surgery, published between January 2001 and February 2018 were included. All adult OSA patients, with documented airway evaluation methods and absent hypopharyngeal collapse. Post-operative outcomes measures included success rates of treatment, AHI, Epworth scale, QOL, and snoring 作者: Engaged 時間: 2025-3-23 04:27 作者: frivolous 時間: 2025-3-23 06:12
Lee Macdonaldsurgery remains the paragon among various sleep surgeries and is the most commonly used surgery for OSA. During past decades, palatal surgery has evolved from the traditional UPPP, minimally invasive palatal surgery, to a functional reconstruction of the lateral pharyngeal wall and soft palate. The 作者: Graduated 時間: 2025-3-23 11:47
Lee Macdonaldter to the study of stochastic analysis. Prominent workers in this field visited the Center from all over the world for periods ranging from a few days to several weeks. To take advantage of the presence in Barcelona of so many special- ists in stochastic analysis, we organized a workshop on the sub作者: 招人嫉妒 時間: 2025-3-23 15:13 作者: minaret 時間: 2025-3-23 19:04
Lee Macdonaldter to the study of stochastic analysis. Prominent workers in this field visited the Center from all over the world for periods ranging from a few days to several weeks. To take advantage of the presence in Barcelona of so many special- ists in stochastic analysis, we organized a workshop on the sub作者: Biguanides 時間: 2025-3-23 23:16 作者: 充滿裝飾 時間: 2025-3-24 05:49
ter to the study of stochastic analysis. Prominent workers in this field visited the Center from all over the world for periods ranging from a few days to several weeks. To take advantage of the presence in Barcelona of so many special- ists in stochastic analysis, we organized a workshop on the sub作者: 機構 時間: 2025-3-24 08:17 作者: SCORE 時間: 2025-3-24 12:29
Lee MacdonaldWritten for amateur astronomers.Concentrates on the practical aspects - what equipment to buy, and how to use it.An ideal practical companion for Chris Kitchin‘s Solar Observing Techniques作者: maladorit 時間: 2025-3-24 17:29 作者: Myosin 時間: 2025-3-24 20:51
https://doi.org/10.1007/978-1-4471-0053-9Astronomy; Observational; Sun; Sunspot; solar作者: Sleep-Paralysis 時間: 2025-3-25 00:49 作者: canonical 時間: 2025-3-25 06:15 作者: JECT 時間: 2025-3-25 10:25
Book 20031st editiont shows sunspots and other features that displaya wealth of fine detail and change their appearance strikingly from day to day. But observing the Sun can be dangerous. NEVER look at the Sun through a telescope or other optical aid, even for a brief instant. The Sun‘s intense radiation, amplified and作者: 爭論 時間: 2025-3-25 13:41
Measuring Solar Activity, by professional observatories, but counting is the only one that is practical for the amateur. Sunspot counts are very useful in monitoring the Sun’s behaviour and one type of sunspot count, known as the Relative Sunspot Number, is an internationally recognised measurement of sunspot activity.作者: 羽毛長成 時間: 2025-3-25 16:56
Solar Photography,ras well within the amateur astronomer’s budget and prices are dropping all the time. At the time of writing (late 2001), some entry-level models were selling for ￡100 or less and many cameras capable of taking really good solar images were available for under ￡500.作者: 經典 時間: 2025-3-25 23:34
What We Can See on the Sun, atmospheric factors are a nuisance to the amateur solar observer and are the main reason why professional astronomers site their solar observatories on the tops of high mountains or on spacecraft. However, with a little planning and thought about the causes of these problems the amateur can sometimes get round them to some extent.作者: bifurcate 時間: 2025-3-26 02:51
1431-9756 n for Chris Kitchin‘s Solar Observing TechniquesThe Sun is the brightest and most accessible object in the sky, and it has much to offer the amateur astronom er with modest equipment. On most days it shows sunspots and other features that displaya wealth of fine detail and change their appearance st作者: BALE 時間: 2025-3-26 05:10 作者: apropos 時間: 2025-3-26 12:01 作者: 躲債 時間: 2025-3-26 14:01
Lee Macdonalderees for their helpful advice in making the volume a reflection of the dynamic interchange that characterized the workshop. The success of the Seminar was due 978-3-0348-9677-1978-3-0348-8555-3Series ISSN 1050-6977 Series E-ISSN 2297-0428 作者: BOON 時間: 2025-3-26 18:56
Lee Macdonalderees for their helpful advice in making the volume a reflection of the dynamic interchange that characterized the workshop. The success of the Seminar was due 978-3-0348-9677-1978-3-0348-8555-3Series ISSN 1050-6977 Series E-ISSN 2297-0428 作者: 大包裹 時間: 2025-3-26 22:05 作者: 品嘗你的人 時間: 2025-3-27 03:56
erees for their helpful advice in making the volume a reflection of the dynamic interchange that characterized the workshop. The success of the Seminar was due 978-3-0348-9677-1978-3-0348-8555-3Series ISSN 1050-6977 Series E-ISSN 2297-0428 作者: 尖酸一點 時間: 2025-3-27 08:26
1431-9756 techniques, such as projecting the solar image onto a screen or using a specially designed, quality solar filter that fits over the telescope aperture, it is quite easy to observe the Sun safely.978-1-4471-0053-9Series ISSN 1431-9756 Series E-ISSN 2197-6562 作者: Amorous 時間: 2025-3-27 10:32 作者: 性行為放縱者 時間: 2025-3-27 15:03
Observing the Sun in Hydrogen-Alpha, ., a telescope containing an occulting disc to precisely block out the Sun’s surface, and optics specially made to keep scattered light from the photosphere to an absolute minimum. For a coronagraph to work, it must be installed at a very high mountaintop site, where scattering of light by our own 作者: pantomime 時間: 2025-3-27 19:09 作者: AER 時間: 2025-3-27 23:48 作者: Neuralgia 時間: 2025-3-28 03:05 作者: 殺菌劑 時間: 2025-3-28 07:42
Lee Macdonald airspace and hybrid procedure to minimize the complications. Evolved postoperative care ensures better recovery after surgery and integrated treatment. In order to achieve comprehensive safety and efficacy in treating SDB patients, palatal surgery addressing the velopharyngeal obstruction continues作者: 慢慢啃 時間: 2025-3-28 13:43
Lee Macdonaldted to the authors of the articles for these exposi- tions of their valuable research contributions. We also would like to thank all the referees for their helpful advice in making the volume a reflection of the dynamic interchange that characterized the workshop. The success of the Seminar was due 作者: Arteriography 時間: 2025-3-28 18:28
Jan Bierwaldused by the pull of the Moon and to a lesser extent the Sun. But very few can explain exactly how and why that happens. Fewer still can calculate the? actual pulls of the Moon and Sun on the oceans. This book shows in clear detail how to do this with simple tools. It uniquely crosses disciplines – h作者: 不規(guī)則 時間: 2025-3-28 21:26
