Equinoxes: The Products Of Celestial Geometry.
Equinoxes: the products of celestial geometry.
“Because Earth is tilted on its axis, there are only two days a year when the sun shines down exactly over the equator, and the day/night line – called the terminator – runs straight from north to south. On these days, day and night are just about equal lengths across the globe.
In the Northern Hemisphere, the March equinox marks the beginning of spring – meaning that our half of Earth is slowly tilting towards the sun, giving us longer days and more sunlight, and moving us out of winter and into spring and summer.” - NASA
More Posts from Kimduong-lhp-blog and Others
"However the indisputable Master of the Fugue without any doubt was J.S.Bach. This is because at his best he was able to blend an almost mathematical perfection of the art form with his own profound emotional realizations.
Bach almost literally wrote the book on Fugues. He produced two books called the well-tempered clavier known by some as the Old Testament of piano music if Beethoven's Sonata is of a New Testament. These two books each have 24 preludes and fugues - one set for each key and we've looked at preludes in another video but these books are like an exploration of the full possibilities of the fugue. He also wrote an unfinished masterwork "The Art of Fugue" - the culmination of his life's work which is practically a textbook of the incredible musical potential of the simplest musical idea.
You can also find some of his richest and most powerful fugues in his Vocal Works: Try his "Motets" or his "B Minor Mass".
So what is a fugue?"
“If Bach is not in Heaven, I am not going!” William F. Buckley, Jr.
Astronomy seminar at Tartu Observatory 3 PM, 24-May-2017
Indrek Vurm
“Gamma-ray bursts and their emission mechanisms”
Abstract:
“Gamma-ray bursts (GRBs) are the most energetic explosions in the Universe after the Big Bang. They are observed as sudden flashes of gamma rays from random directions in the sky, lasting from seconds to minutes. GRBs are thought to result from cataclysmic events associated with the birth of a compact object (neutron star or a black hole) either in the collapsing core of a massive star or in a NS-NS or NS-BH merger. Despite being discovered almost half a century ago, the mechanism of their emission is still a matter of active debate. I will review our current understanding of the processes at work and will discuss how detailed numerical modelling can place constraints on the physical conditions at the source as well as the GRB environments.”
Presentation (pdf).
人間事常難隨人願， 且看明月又有幾回圓. - Nhân gian sự thường nan toại nhân nguyện, Thả khán minh nguyệt hựu hữu kỉ hồi viên - Chuyện đời thường khó toại lòng người, Đành ngắm vầng trăng sáng đã bao lần tròn.
Gá thân mộng, Dạo cảnh mộng. Mộng tan rồi, Cười vỡ mộng. Ghi lời mộng, Nhắn khách mộng. Biết được mộng, Tỉnh cơn mộng.
Thích Thanh Từ, Mộng (07.1980)
A Zen Master said: "Before practicing Zen, rivers were rivers and mountains were mountains. When I practiced Zen, I saw that rivers were no longer rivers and mountains no longer mountains. Now I see that rivers are again rivers and mountains are again mountains."
Thich Nhat Hanh, Zen Keys
