The 1812 Overture by Tchaikovsky lasts for 14 minutes and 40 seconds. It is scored for a philharmonic orchestra having up to eighty musicians, playing a wide variety of instruments. The instruments include strings: violins, cellos, basses, brass: trumpets, trombones, French horns, tubas, woodwinds: clarinets, saxophones, flutes, piccolos, as well
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as percussion: drums, cymbals, bells, and triangles. The music for each instrument consists of multiple pages, each containing hundreds of notes. Each instrument gets a full workout in the course of the overture, which contains loud bombastic sections, as well as tranquil interludes. When Joseph Fourier decided to form an orchestra to play the Overture, he had only flute players (fortuitous, as the flute plays what is close to a pure sine wave) at his disposal. And, the players were severly limited, each player could play only one note, at one volume, for the duration of the piece. So that, when Fourier`s baton dropped on the initial downbeat, each player played his/her one note, and held it at a constant volume, for 14 minutes and 40 seconds, through the climatic finale. Fourier claimed that he could re-score the piece (see how in the last section) so that his orchestra`s version of the 1812 Overture would sound exactly like the full orchestra version, as played by the Berlin philharmonic, for example. Let me suggest that you carefully re-read the previous two paragraphs a few times, to realize how absolutely unbelievable the theorem demonstrated below really is. Each player plays one note, at one volume, for the duration of the piece. Not a misprint. Think of it this way: right before the final climatic chord, there is a second of silence. During this silence every player is playing the same note he/she has played since...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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