eli5: Why do cheap lighters have a divide in their fuel reserve?

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I recently got a science teaching job and had to buy a cheap see-through lighter to ignite the Bunsens, I don’t understand why the tank has to have two different compartments on the inside. You can tilt it and fill up one or the other, could someone explain why this is necessary instead of one big tank?

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18 Answers

Anonymous 0 Comments

You’ll notice the straight walled lighters (like you described) have the divider which is actually more of a rib as it allows pass through to either side. Then there is your classic Bic, which is oval. Both speak to structural integrity.

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