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Blau gas was about the same density as air, so burning it had little effect on buoyancy. [42] [43] On a typical transatlantic journey, the Graf Zeppelin used Blau gas 90% of the time, only burning petrol if the ship was too heavy, and used ten times less hydrogen per day than the smaller zeppelin L 59 did on its Khartoum flight in 1917. [44] [nb 7]
The denser the surrounding hydrogen gas, the smaller the Strömgren sphere. In Strömgren's model, the sphere now named Strömgren's sphere is made almost exclusively of free protons and electrons. A very small amount of hydrogen atoms appear at a density that increases nearly exponentially toward the surface.
I needed to have my workshop, my aeronautical garage, my hydrogen-generating apparatus, and a plumbing system to connect my installation to the illuminating gas pipelines. [31]: 113 Santos-Dumont had a large hangar built at the Saint-Cloud site, large enough to hold No. 3 when completely filled, as well as the equipment to make the hydrogen gas.
Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, [11] hydrogen gas, molecular hydrogen, or simply hydrogen. It is colorless, odorless, [12] non-toxic, and highly combustible.
1625 – First description of hydrogen by Johann Baptista van Helmont. First to use the word "gas". 1650 – Turquet de Mayerne obtains a gas or "inflammable air" by the action of dilute sulphuric acid on iron. 1662 – Boyle's law (gas law relating pressure and volume). 1670 – Robert Boyle produces hydrogen by reacting metals with acid.
Billions of people are using different kinds of energy each day and 2023 was a record-breaking year for renewable energy sources — ones that don't emit planet-warming pollutants like carbon ...
In 1913 they published a paper that attempted to prove the existence of zero-point energy by calculating the specific heat of hydrogen gas and compared it with the experimental data. However, after assuming they had succeeded, they retracted support for the idea shortly after publication because they found Planck's second theory may not apply ...
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