Current energy policies are still based heavily on natural resources. Meanwhile, the trend is increasingly toward alternative resources, such as wind power.
It's only a matter of time before natural resources, such as petroleum, are depleted. Petroleum, a fossil-based energy source deposited across millions of years, is used to produce fuel or electricity. Taking stock of the fact that 260 billion barrels (one barrel = 159 liters) of oil were extracted over the last 11 years, it's evident that the world's petroleum resources will be depleted one day. New developments in solar or wind power are aimed at providing alternative energy sources that will enable us to maintain our current standard of living. Petroleum is also required by the chemical industry to manufacture special plastics.
When discussing the subject of petroleum and alternative energy, one must bear the advantages and disadvantages in mind. Our resources are running short . Because we cannot count on petroleum for the future, there will come a time when everyone will rely on the efficiency of wind power and other alternative energy sources . Unlike petroleum, wind power can be managed to ensure that it constantly renews itself. Wind power meanwhile makes it possible to have enough resources to supply entire cities. Petroleum has the additional disadvantage of harming the environment through CO2 emissions. This has resulted in increasing demand for resources such as wind power. Wind power can be classified into different categories. A class 4 wind turbine can meanwhile provide resources in a much more efficient manner than petroleum resources for instance. In addition, unlike petroleum, resources such as wind power offer a decentralized energy supply. This means that in contrast to petroleum, the utilization of wind power does not require a large power plant. Instead, it makes "transporting" the energy easier and faster. Decentralized wind power entails a massive infrastructure change. Resources such as wind power certainly bring disadvantages when it comes to the environment, although they pale in comparison to the disasters that can result from petroleum. The utilization of our resources determines how we continue to maintain our standard of living. This makes it important to continue public discourse on the issues of wind power and petroleum.
It's only a matter of time before there is no petroleum left. For this reason, from a resource standpoint we should already be moving toward heavy reliance on wind power instead of petroleum. After all, from a pure scientific point of view, new petroleum resources won't be available for millions of years. Unlike petroleum, wind power is a resource that will never run dry. In Germany alone, wind power is serving as a popular alternative resource to petroleum. The demand for wind power will increase in line with the consumption of petroleum. For this reason, it is imperative that we gradually move away from petroleum and make more use of wind power or other alternative energy resources. The environmental pollution caused by petroleum is reason enough for an environmentally-conscious society to use solar or wind power. In contrast to petroleum, wind power is significantly better for the environment and offers a unique resource balance.
This topic covers issues related to energy generation, conversion, transportation and consumption and how the industry is addressing the challenge of energy efficiency in general.
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Metamaterial device controls transmission and reflection of acoustic waves
Metamaterials researchers at Duke University have demonstrated the design and construction of a thin material that can control the redirection and reflection...11.04.2018 | Read more
In 2016, University of California, Berkeley, engineers demonstrated the first implanted, ultrasonic neural dust sensors, bringing closer the day when a Fitbit-like device could monitor internal nerves, muscles or organs in real time. Now, Berkeley engineers have taken neural dust a step forward by building the smallest volume, most efficient wireless nerve stimulator to date.
The device, called StimDust, short for stimulating neural dust, adds more sophisticated electronics to neural dust without sacrificing the technology's tiny...11.04.2018 | Read more
A team of scientists from ETH Zurich in Switzerland and the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) in Hamburg have, for the first time, unraveled the electronic dynamical processes that occur upon excitation of electrons in gallium arsenide at the attosecond timescale.
Fabian Schlaepfer and his colleagues in the experimental group of Ursula Keller at the ETH Institute for Quantum Electronics, together with Angel Rubio and...04.04.2018 | Read more
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with the company EV Group (EVG) have developed a new silicon-based multi-junction solar cell, which can convert exactly one-third of the incident sunlight into useful electricity. This newest result is now published in the renowned scientific magazine Nature Energy.
Silicon solar cells dominate the global photovoltaic market today with a share of 90 percent. With ever new technological developments, research and industry...03.04.2018 | Read more
Developing atomically thin 'drumheads' for ultra-low power communications and sensory devices
Dynamic advances03.04.2018 | Read more
The researcher team of Tokyo Institute of Technology (Tokyo Tech) discovered that the film constructed by assembling a nontoxic filamentous virus functions as a heat dissipation material, and that can be simply prepared by drying the virus aqueous solution at room temperature. This discovery is expected to elucidate the mechanism of new heat transport in electronics.
Organic polymeric materials generally have low thermal conductivity and are not suitable for rapid heat dissipation of electric and electronic equipment in the...03.04.2018 | Read more
A research team at Virginia Tech has improved the traditional design of fog nets to increase their collection capacity by threefold
Fog harvesting may look like whimsical work.28.03.2018 | Read more
Using a new technique developed by drive systems engineers at Saarland University, electromagnetic valves can precisely control the amount of liquid they dispense and electromagnetic door locks can close smoothly and quietly. All that the engineers in Saarbrücken need is a magnetically permeable metal bolt that moves within a coil of wound copper wire and their sensor-free, patent-pending control methodology. Using this combination, Professor Matthias Nienhaus and his team are able to keep the bolt in any desired position without the need for additional position sensors.
Simply by analysing the electric current that flows through the coil, the team is able to determine where the bolt is and can adjust its position...28.03.2018 | Read more
Using artificial-muscle actuators, Stefan Seelecke and his team of engineers at Saarland University have developed a new self-optimizing conveyor technology that adapts itself to the size, weight and desired speed of the materials being conveyed. The technology makes use of silicone polymer-based artificial muscles to transport dry bulk materials of all kinds, from foodstuffs to small metal components. By exploiting the properties of electromechanically active polymers, the Saarbrücken research team has built an actuator that they install at intervals below the conveyor belt.
Rapid contractions of the artificial muscles convey the material on the belt, either by projecting the material forward in a series of tiny bounces or sliding...27.03.2018 | Read more
Market-oriented R&D as well as testing and certification of batteries and energy storage systems support the global energy transformation and further the expansion of electric mobility. Over 30 million euros shall be invested in the new competence center located in Freiburg, Germany.
The Fraunhofer Institute for Solar Energy Systems ISE, the Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institute, EMI and the Association of...26.03.2018 | Read more
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.
Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...
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