English: Drawing of a hydrogen lighter invented by Johann Wolfgang Döbereiner.
Components: a. Acid reservoir b. Reaction chamber and hydrogen tank c. Control rod d. Zinc ingot e. Valve f. Hydrogen nozzle g. Platinum catalyst
The picture is copied from Projekt Runeberg which contains only very old and therefore non-copyrighted material.
Deutsch: Zeichnung eines Wasserstofffeuerzeugs nach Johann Wolfgang Döbereiner.
Komponenten: a. Säurereservoir b. Reaktionsgefäss und Wasserstofftank c. Kontrollstab d. Zinkbarren e. Ventil f. Wasserstoffdüse g. Platinkatalysator
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Public domainPublic domainfalsefalse
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Cal incloure una etiqueta de domini públic als Estats Units per indicar perquè aquesta obra és en domini públic als Estats Units. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
The picture is copied from [http://runeberg.org/nfbg/0098.html Projekt Runeberg] which contains only vry old and therefore non-copyrighted material. The picture shows a gadget that makes fire and that was invented by Johann Wolfgang Döbereiner .