Renaissance baroque ornamental frame - Vintage Nostalgia
Renaissance baroque ornamental frame

Renaissance ornamental frame with waterfalls and floral patterns

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Renaissance portraits frame with 6 places and ornamental borders - Vintage Nostalgia
Renaissance portraits frame with 6 places and ornamental borders

Baroque ornamental frame with 6 portraits and a triumph of armor and weaponry as decoration

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Baroque triumph of different decorative elements, vintage engraving - Vintage Nostalgia
Baroque triumph of different decorative elements, vintage engraving

Renaissance ornamental triumph with several element of arts, science and militaria

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Chemistry:  burning hydrogen produces pure water - Vintage Nostalgia
Chemistry: burning hydrogen produces pure water

How to prove that burning hydrogen produces pure water as “ash”. In the left-hand bottle bits of zinc are oxidised by a diluted sulphuric acid being poured in; the resulting hydrogen is collected through the second neck and exiccated in … Continued

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Chemistry: vapor density determination - Vintage Nostalgia
Chemistry: vapor density determination

Lab equipment for vapor density determination. Vapor density is the density of a vapour in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of … Continued

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Chemistry: lab equipment for nitrogen production - Vintage Nostalgia
Chemistry: lab equipment for nitrogen production

Nitrogen gas is an industrial gas produced by the fractional distillation of liquid air. Nitrogen is formally considered to have been discovered by Scottish physician Daniel Rutherford in 1772, Lavoisier referred to it as “mephitic air” or azote.

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Chemistry: early spectroscope using prisms with graduations marking wavelengths of light - Vintage Nostalgia
Chemistry: early spectroscope using prisms with graduations marking wavelengths of light

Optical spectrometer or spectroscope is an instrument used in spectroscopy for producing spectral lines and measuring their wavelengths and intensities. Joseph von Fraunhofer developed the first modern spectroscope, Gustav Robert Kirchhoff and Robert Bunsen discovered the application of spectroscopes to … Continued

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Chemistry: how to obtain hydrogen at room temperature - Vintage Nostalgia
Chemistry: how to obtain hydrogen at room temperature

An easy way to obtain hydrogen at room temperature. Bits of zinc were put on the bottom of a bottle; an 1:8 sulphuric acid solution was poured through the primary neck thus binding the water oxygen as zinc oxide, and … Continued

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Chemistry:  obtain hydrogen by dissociating water - Vintage Nostalgia
Chemistry: obtain hydrogen by dissociating water

A device to obtain hydrogen by dissociating water over glowing iron: the hot iron used the water oxygen to form an iron oxyde thus leaving the hydrogen free. An iron pipe filled with iron shavings was heated up in a … Continued

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Chemistry:  lab production of silicon tetrachloride SiCl4 - Vintage Nostalgia
Chemistry: lab production of silicon tetrachloride SiCl4

Lab equipment for production of silicon tetrachloride : SiO2+Cl4+C2=SiCl4+2 CO. The silicon tetrachloride is condensed to colorless liquid form.

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Chemistry: how to obtain hydrogen from water - Vintage Nostalgia
Chemistry: how to obtain hydrogen from water

A simple and effective method to obtain hydrogen from water: some metals such as potassium and sodium bind eagerly the oxygen of water even at room temperature thus releasing the corresponding hydrogen, which is collected in a closed cylinder filled … Continued

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Chemistry: sulfur dioxide production: 2 H2SO4+Cu=CuSO4+SO2+2 H2O - Vintage Nostalgia
Chemistry: sulfur dioxide production: 2 H2SO4+Cu=CuSO4+SO2+2 H2O

Vintage lab equipment for sulfur dioxide production. The gas is condensed to liquid form through a mixture of ice and salt. Sulfur dioxide was used by the Romans in winemaking when they discovered that burning sulfur candles inside empty wine … Continued

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