multitude of travels to the other side
One of my favorite optical illusions. It seems that the upper part of this object is darker and the lower is lighter. But if you cover the middle line with something (for example your finger or two), you immediately see that they are really the same! The shift happens so instantaneously that it’s almost like magic!This is called “Cornsweet effect”, and it amazingly shows how our brains see things. For our visual cortex, certain things shapes, borders, edges and the overall context are sometimes much more important than the actual physical luminance of the object in determining its perceived brightness and tone.The explanation is actually quite complicated. For those interested, I would suggest reading this scientific paperhttp://www.jneurosci.org/content/19/19/8542.full or enrolling to this wonderful course https://class.coursera.org/visualpercepbrain-001

One of my favorite optical illusions. 

It seems that the upper part of this object is darker and the lower is lighter. But if you cover the middle line with something (for example your finger or two), you immediately see that they are really the same! The shift happens so instantaneously that it’s almost like magic!

This is called “Cornsweet effect”, and it amazingly shows how our brains see things. For our visual cortex, certain things shapes, borders, edges and the overall context are sometimes much more important than the actual physical luminance of the object in determining its perceived brightness and tone.

The explanation is actually quite complicated. For those interested, I would suggest reading this scientific paperhttp://www.jneurosci.org/content/19/19/8542.full or enrolling to this wonderful course https://class.coursera.org/visualpercepbrain-001

A new work - ambient soundscape based on multiple field recordings in industrial environments

A book about Arvo Pärt and a wonderful collection of astrophotography

A book about Arvo Pärt and a wonderful collection of astrophotography

My old track “Rebirth” and a time-lapse video of clouds that I shot last year. Their movement and transformations are mesmerizing!

Nice photo of noctilucent clouds on today’s “Astronomy Picture of the Day”
By the way, we still have no scientific consensus about the exact nature of this phenomenon. It is still a mystery. The weird thing is that they first appeared only in 1885, there is absolutely no record of their observations before that year. Some think that it may be connected with the eruption of Krakatoa volcano in 1883, but the connection is still unclear, although studies have shown that volcanic ash and meteor dust to some extent contribute to their formation. There was also some increase in their occurrence after the Tunguska event.

In recent years the occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent. It may be somehow connected with the global climate change. They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator. They can be observed only when the Sun is below the horizon, usually in a deep twilight.

Nice photo of noctilucent clouds on today’s “Astronomy Picture of the Day”

By the way, we still have no scientific consensus about the exact nature of this phenomenon. It is still a mystery. The weird thing is that they first appeared only in 1885, there is absolutely no record of their observations before that year. Some think that it may be connected with the eruption of Krakatoa volcano in 1883, but the connection is still unclear, although studies have shown that volcanic ash and meteor dust to some extent contribute to their formation. There was also some increase in their occurrence after the Tunguska event.

In recent years the occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent. It may be somehow connected with the global climate change. They are most commonly observed in the summer months at latitudes between 50° and 70° north and south of the equator. They can be observed only when the Sun is below the horizon, usually in a deep twilight.

Stalker VA - Sky Colors (fragment of live improvisation at “Ambient Night 4”, 7.06.14).

This performance includes real time synthesis and processing of instruments (including for example Irish low-whistle), voice and sound objects.

I should say that this year Coursera has offered some really great and challenging courses, which require much more work than an average online course.First, there was a mathematically sophisticated Astronomy course in the beginning of the year (by the way, http://www.wolframalpha.com/ is a great online instrument for dealing with complex calculations). Then “An Introduction to Classical Music Composition”, where I learned how to write scores without piano using classical functional harmony.And after that I also decided to refresh some of my programming skills and to learn to code in Python language. Really had a lot of fun with this course - developing some games, including a modern version of the classic “Asteroids” game was really amusing!

I should say that this year Coursera has offered some really great and challenging courses, which require much more work than an average online course.

First, there was a mathematically sophisticated Astronomy course in the beginning of the year (by the way, http://www.wolframalpha.com/ is a great online instrument for dealing with complex calculations). Then “An Introduction to Classical Music Composition”, where I learned how to write scores without piano using classical functional harmony.

And after that I also decided to refresh some of my programming skills and to learn to code in Python language. Really had a lot of fun with this course - developing some games, including a modern version of the classic “Asteroids” game was really amusing!

A new minimalist work for piano and e-bowed guitar.


When the surface of the water becomes calm, the reflections on it turn real… and there’s nothing left to fear…

A short time-lapse video I made of a thunderstorm couple of weeks ago.

It was shot from my balcony.
Audio is added form another video I shot a few minutes after this one, because the camera does not record sound in time-lapse mode.

Sometimes nature provides the best audio-visual performances!

nyphil:

How Composers Spent Their Time

These snapshots give us just a glimpse of what life was like for these towering figures of classical music. Take a look at some of the quirky, idiosyncratic doings of Beethoven, Tchaikovsky, Mozart, and other geniuses of note here.