How To Build A Deep Bass System For $750

Tactile Transducers

In this article I will describe how to build a high-fidelity, bass-intensive sound system for under $1000. The secret ingredient of the system is the use of tactile transducers. These transducers effectively eliminate the need for expensive woofers or subwoofers. It’s an efficient method of producing deep, high-fidelity bass for a fraction of the usual cost. Many […]

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A Solar Flower Tower Rises In The Desert

Constructing The Solar Tower In Israel

This unusual solar tower was designed by Israeli architect Haim Dotan for AORA Solar. It is set to launch on June 24 in South Israel. The tower has 30 tracking mirrors (heliostats) that reflect sunlight towards the top of a 30-meter high solar tower. The top of the tower has a special solar receiver and […]

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Infinia’s Modular Solar Dish Gets Funding

Infinia is a company with a modular product: a mirrored solar dish that looks like a home satellite receiver, and produces 3.5 kilowatts of energy. Infinia announced Monday that it had received $50 million in investment. The dish focuses the sun’s rays on to a Stirling engine (a 17th century invention), this heats a gas […]

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Storing Solar Power In Molten Salt

Solar power is a truly efficient source of energy, but it tends to fluctuate, and, as you might know, it turns off at night. One clever way to alleviate this intermittence is to store solar energy in the form of heat using molten salt. An aerospace company, Hamilton Sundstra, has created a venture called SolarReserve, […]

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Solar Tower Video

Here’s a video of the solar tower in Spain that has been getting a lot of press lately. Engadget describes the system: “It consists of a towering concrete building, a field of 600 (and growing) sun-tracking mirrors that are each 120-square meters in size, and a receiver that converts concentrated solar energy from the heliostats […]

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