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Pierre Janssen discovered the lines of helium in the spectra of the Sun on 18 August 1868 at Guntur (India).

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How does inhalation of helium cause death?

wel helium isn't air so if you don't take a breth or to after you inhale some u could sofacate. slowly as u in hale helium u get lightheaded and then pass out. at a b-day of mine a friend kept inhaling baloons and passed out 4 times but he was fine. it can also make u a little nuts (for like an hour or so) and make u forgetful. almost evryone there had like 10 baloons and woke up the next day forgeting half the night (there where no drinks at the party all heluum) but its fun


What can helium be used for?

It is lighter than air so it is used in balloons and airships (as a gas) to make them float and as a coolant (as a liquid). And also when you suck helium your voice changes and goes really high pitched and squeaky (your voice changes back to normal almost staight away).


Which important body of water did Balbao discover?

Vasco Núñez de Balboa discovered the Pacific Ocean in 1513 while on an expedition in present-day Panama. Balboa's exploration made him the first European to reach this body of water from the New World.


Is hydrogen used in airships?

Yes. Hydrogen was the material originally used to produce lift in airships. Hydrogen (H2, also called dihydrogen) is cheap and easy to produce, as it can be created through the electrolysis of water. Hydrogen is also the lightest element in existence, and since airships attained lift using lighter-than-air materials, this was a valued trait. However, hydrogen is highly flammable in the presence of oxygen; even explosive! So a lot of effort went in to preventing ignition of the hydrogen. Passengers were searched before boarding an airship to ensure sure they had no matches or lighters in their possession. Smoking was prohibited while aboard the ship, except in one specially designed compartment, which contained one lighter. Hydrogen was the main source of lift for the majority of airships in Europe from the late nineteenth century to the mid twentieth century. However, in the United States of America, a natural source of the lighter-than-air gas helium was discovered. Though heavier than hydrogen, helium was favored for safety purposes, as unlike hydrogen, helium is nonflammable. However, helium was far rarer and more valuable than hydrogen, as it could not be as easily produced. As the United States of America had a monopoly on helium at the time, it had to be imported by the European countries which used airships. Most notably by Germany, with its famous Zeppelins. But shortly after Hitler became the Fuhrer of Germany, America began to enforce a trade embargo of helium exports against Germany. Because of this, Germany could no longer use helium in their airships, and were forced to resort back to hydrogen. During this time, the Hindenburg, the largest airship ever constructed, was the pride of Germany. The Hindenburg was constructed to be flown using helium, believing the ban on helium exports would be lifted; but it was not. As such, the Hindenburg was forced to fly using hydrogen. As it was landing in New Jersey, the hydrogen ignited, and the ship crashed. It became one of the most famous airship disasters in history. The use of airships did not directly stop after the Hindenburg, however. But the majority of newly constructed airships were helium lifted. The majority of these helium airships were constructed in the United States of America, and were known as blimps. Blimps are still used to this day; however, they are smaller than their Zeppelin counterparts, and seldom used as a means of transportation. To conclude the answer to your question; hydrogen was used in airships, but due to the dangers, it is almost never used now.


What is the opposite of cloudy day?

sunny day or a clear day

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When does Pierre come on harvest moon an island of happiness?

First, you must upgrade your house to medium size. then, buy a kitchen. you must then discover 5 recipes, and then, Pierre will arrive at your door the next day. i should know. i married him!


What day was Zacharias Janssen born?

i dont know myself


What are Hans and Zacharias Janssen famous for and how did their invention help in the development of the present day cell theory?

Hans and Zacharias Janssen are famous for making the first "simple" microscope which helped to discover cells and that everything is made up of living cells etc. They help us understand the cell structures of a living thing.


In France do they have a day of remembrance of Pierre de fermat?

No, there is no remembrance day for Pierre de Fermat, who is pretty unknown in France.


When is the feast day of Saint Arnold Janssen?

January 15 is the Feastday of St. Arnold Janssen.It is on January 15.


What are two other names for the Columbus Day?

Discover's day and pioneer's day


What two other names for the holiday Columbus Day?

Discover's day and pioneer's day


What are two other Holiday names for Columbus day?

Discover's day and pioneer's day


What day did Marco Polo discover China?

he discovered china in 1298


What has the author Terry Palmer written?

Terry Palmer has written: 'Discover Turkey' 'A Day Out in Southwold' 'Discover Guernsey, Alderney and Sark' 'Discover Tunisia' -- subject(s): Description and travel, Guide books, Guidebooks 'Discover the Suffolk Coast' 'Euroslavia' 'Discover Florida' 'A Day Out in Aldeburgh, Snape, Orford' 'How to survive on the Costa'


How did America discover Sunday as first day of the week?

America did not discover it as being the first day a week. It always has been. See the related question below.


in with day did they discover lantartique?

30th of January 1820