Recent comments in /f/explainlikeimfive

YungSkuds t1_ixuc9mm wrote

It is still around and a decent format, just not so much for “normal” images. It is big in medical imaging and some other specialty industries for a number of its features.

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lucky_ducker t1_ixubbvq wrote

The file extension is just a suggestion to the OS what application should be used to open the file, and you can change the file association if you want. On Windows, you use the Default Apps applet to change specific file extensions to be associated with specific applications.

The real format information is in the metadata of the file itself, the first few bytes of the data. For example, if the first two bytes of a file are MZ the file is a DOS/Windows executable file (MZ are the initials of the guy who designed the file format).

JPG and JPEG files have, for some time and for the most part, been saved in the JFIF format internally. If you open a JPG file in a hex editor or programmer's text editor, you'll see somewhere around byte offset 0x7 the characters JFIF indicating that the file is actually in that format. Likewise PDF files have PDF in about the same position.

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KrustyBoomer t1_ixu93gc wrote

For 100-years, NO ONE ever turned their cars off typically to fuel, for sure after self-pay became the norm. I think part of today's worry is how hot catalytics get and could ignite vapors. Probably still hot though.

This one is the classic static spark though, getting back in the car error I pointed out. Forward to end, lot of filler.

https://www.youtube.com/watch?v=T6VKxmUPb3g

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Dinux-g-59 t1_ixu7w4n wrote

Renaming the extension doesn't ruin the file/image format. Window's relies strongly on extensions to know which program use to ipen a certain file when you double click it. Other OSes, like Mac and Linux use the magic number to determine the type of file. If your orogram is able ro open the file once renamed, you may simply right click on one of them, with the original extension, choose "open with" the program you use and tick the box to always use that program. This should solve your problem.

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Fat_IRL t1_ixu5fba wrote

Yeah you right with all of that, especially the last, I was kinda being generic with my response.

It just kinda freaks me out when I'm on my Linux laptop and it'll save my file 'fartbutt' as a file with no extension at allunless I tell it to, and it's still valid.

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Fat_IRL t1_ixu4oej wrote

No. Not in the way you're probably thinking. Drawing a bow (correctly) is almost all in the back muscles. Or really they ARE muscles that control your arm, but they are located in your back. In theory. But unless you're an Olympian or have impeccable technique or something like that, your arm is gonna be involved.

Kinda like how a pull-up isn't an arm exercise, it's really your back muscles moving your arms.

If you're using a modern bow and don't know what you're doing, it's gonna be difficult now matter how strong you are, or what the weight is. 50 pound draw and your first time? Its gonna suck. But 12 year olds can hand a 50 pound draw on aodrrnn bow if they know what they're doing.

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jackmax9999 t1_ixu46oh wrote

I use IrfanView as my image viewer and it even notifies you when the extension doesn't match the actual file format, like "this JPEG file has .png extension, would you like to rename it to .jpg?"

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Fat_IRL t1_ixu3x4w wrote

90 pounds seems pretty much around (even sometimes low) what I saw referenced in my 2 mins of googling. So yeah.I cannot imagine how fucking strong you gotta be to do that even. 70 pounds is rough to me, muscular wise...but then I got like a lil trigger apparatus that connects to my wrist so I don't have to use my actual fingers.

Just think about how much pressure is gonna be on their fingers. with a cord of fabric of some type putting 90 pounds of pressure on your fingers as you draw the string back. That's hell. What badasses.

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kyrsjo t1_ixu2h7p wrote

Yeah, a huge lump of iron sitting inside a somewhat isolated bay won't go from pretty warm to -40 in a few minutes. That said, starting a really cold diesel isn't fun, and probably puts a ton of wear on it. Fuel freezing isn't really a problem tough, since there is a different fuel blend in the winter...

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nesquikchocolate t1_ixu056o wrote

Except that your entire position depends on using Google to not find some obscure hand-written news article about a 93 year old ford that caught fire at a refuelling station.

Your assumption is that all incidents are listed on the Internet and easily searchable using common terms - which is absolutely false in any event. Not every town has a news reporter that documents every occurance in a public facing repository.

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JaggedMetalOs t1_ixtza8l wrote

> File extensions don't actually matter, they're for humans, not computers. More or less.

Well, I wouldn't say that. They are used (in Windows) to decide what icon to use and what program to open it with when you double click.

Technically Windows could look inside every file to decide this, but that would be much slower when listing files in a folder.

Also while most applications will check the contents of a file while opening it, some assume a format based on the file extension (eg. LibreOffice will always open .csv as a text csv file, even if the file is actually an xls/ods)

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