Solar LED luminaire: the even more economical alternative to LED lighting

It is not so much the unique performances that it offers, but the need to reduce its ecological footprint and its energy bill, which motivates the switch to LED lighting. And for good reason ! Between its foolproof durability, its excellent light output, and its electrical expenditure 20 times lower than that of traditional lamps, […]

Lipo Lithium Battery

Electric transport (Lipo) VS thermal (gasoline): criteria for choosing a battery and comparative calculations

The performance of electric transport depends heavily on the quality of their batteries. It is currently the real Achilles heel which limits the development of electric propulsion, as well in road transport as maritime and… that air of course. We present to you a quick little state of the art of the performance of Lithium-Polymer batteries currently on the […]


Energy transition: Portugal powered for 4 days entirely with renewable electricity!

While France continues to bet (almost) everything on nuclear electricity… countries are currently breaking records for renewable electricity production! This month it's Portugal's turn to achieve a real tour de force of renewable energy! A few days after Germany produced so much renewable electricity that producers […]

Urban nuclear power: illusions of Boris Pregel, visionary atomic physicist in 1961 ...

Urban nuclear power: illusions of Boris Pregel, visionary atomist physicist in 1961…… or how some scientists can be seriously wrong in their predictions and in the blind confidence they have in Science and in their discoveries! In a special page of the television news of November 1961, the atomic physicist Boris Pregel recommended to build […]

Chernobyl: a million dead in 20 years?

One million deaths from Chernobyl is the figure put forward by a publication from the New York Academy of Sciences based on a compilation of 5000 articles. Analyzes according to P.Langlois: According to a book published in 2010 by the New York Academy of Science and entitled “Chernobyl: Consequences of the Catastrophe for People and the Environment”, […]

Chernobyl, human and environmental consequences

Assessment of the Chernobyl disaster by the New York Academy of Sciences, full text in English. 349 pages .pdf. 2010 Original title: "Chernobyl. Consequences of the Catastrophe for People and the Environment ”Summarized by P.Langlois:“ According to a book published in 2010 by the New York Academy of Science and entitled “Chernobyl: Consequences of the […]

Human and economic toll of the Chernobyl disaster by the IAEA

Assessment of the Chernobyl disaster by the IAEA published in 2005 .pdf of 260 pages. Other sources report a balance sheet and figures very different from those published by the IAEA, see links and extract below. Find out more: - Debate and information on the Chernobyl assessment: overall cost and human and health assessment […]

Fukushima nuclear disaster, the other Chernobyl?

No one can ignore the desperate nuclear situation at the Fukushima 1 Daiichi power plant anymore… We are facing a desperate situation despite the attempts to minimize the industrial players or the government but also, and this is less understandable or acceptable, some players French politicians… On, we are not “viscerally” anti-nuclear: we […]

Pico hydropower plant on an isolated site

Pico Hydroelectricity: presentation of a pico hydroelectric power station in private homes in France Summary: Since 1985 Mme and Mr X have lived in an isolated house located below a mountain side in the Alpes de Haute Provence (04). When they moved in in 1985, Mrs and Mr X made a request for connection to the electricity network […]

Europe: CO2 emissions by country and by electric kWh

europe-emissions-from-co2-by-country-and-by-kwh-electric What are the emissions of carbon dioxide, CO2, per kWh of electricity respectively in France and our main European neighbors? Find out more: visit forum CO2 and global warming These figures are taken from the following work: Engineering thermodynamics: energy - environment by Francis Meunier and published by Dunod Click to discover this […]

Download: Concentrated Solar Thermal Power Plants

Technical presentation and development potential of thermodynamic solar power plants with solar concentration. Find out more: - presentation and operation of solar power plants - summary links on solar power plants - Operation and interest of a concentrated solar power plant - Solar towers at Vortex Download the file (a newsletter subscription can […]

Nuclear reactors

The different types of nuclear reactors: principle of operation. Keywords: reactor, nuclear, operation, explanation, PWR, EPR, ITER, hot fusion. Introduction The first generation of reactors includes reactors developed in the 50s and 70s, in particular those of the natural uranium graphite gas (UNGG) sector in France and the “Magnox” sector in […]