Bright eyes! Microalgae can also become LED bulbs

Microalgae are a kind of autotrophic plants that are widely distributed on land and sea, rich in nutrients and high in photosynthetic utilization. It grows through photosynthesis and is an effective way to regenerate biomass energy today and reduce carbon dioxide emissions. Earlier, researchers found that microalgae can produce weak currents when performing photosynthesis. By charging a certain amount of microalgae in a closed glass container, the LED light in the current lighting bottle can be collected.

This time, in the Pittsburgh Museum of Modern Art, such a strange exhibit appeared, called "Living Things." It is a conceptual microbial photosynthesis lamp designed by architect Jacob Douenias and industrial designer Ethan Frier, using the unique properties of spirulina in microalgae.

The reason why spirulina is used is because of the unique green color of spirulina, the absorption of light, and its edible properties (which can be added into food as a powder). The two designers took advantage of these qualities of spirulina, which were grown in alkaline broth and then in glassware-sized glassware. Spirulina was combined with waste heat, light, and carbon dioxide. Produces photosynthesis, which gives off green light.

These large, hand-blown large glass bottles provide light and heat to people in the room, and they are high-performance photobioreactors that heat, illuminate, ventilate, replenish and control algae. Metabolites.

Working principle and process

The designer puts the spirulina in a variety of large glassware of different shapes, can be hung or placed in the living room and dining room for lighting and decoration, through the light for photosynthesis, the different corners of the room are refreshing and pleasant Green light. Look for an inconspicuous place to install the control system and connect each lamp with a water pipe and cable. And this control center controls the circulation system of each lamp.

The 3D printed nylon piston opening is mounted on the table and the system can be used to control system flow. When the liquid concentration is high enough, the 18 valves can be opened to collect spirulina or to replenish fresh culture fluid. In the wooden box below, it is the core of the entire replenishment system consisting of pipes, pumps, air pumps, LED drivers, filtration systems, and heaters.

Such a set of microalgae photosynthesis lamps that use waste heat and carbon dioxide not only make the interior decoration look fresh and natural, but also special environmental protection and energy saving. If it can be effectively developed, it is believed to bring great contributions to human society. The purpose of the two designers' design is to let the public begin to pay attention to the power of microbes and let this resource be developed.

ETH Miner

Mining is the process of creating a block of transactions to be added to the Ethereum blockchain in Ethereum's now-deprecated proof-of-work architecture.

The word mining originates in the context of the gold analogy for cryptocurrencies. Gold or precious metals are scarce, so are digital tokens, and the only way to increase the total volume in a proof-of-work system is through mining. In proof-of-work Ethereum, the only mode of issuance was via mining. Unlike gold or precious metals however, Ethereum mining was also the way to secure the network by creating, verifying, publishing and propagating blocks in the blockchain.

Mining ether = Securing the Network

Mining is the lifeblood of any proof-of-work blockchain. Ethereum miners - computers running software - used their time and computation power to process transactions and produce blocks prior to the transition to proof-of-stake.

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