Timeline for Is it possible to design a bottle that can always be "full"?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Sep 1, 2023 at 13:48 | comment | added | FeRD | @ChrisH I don't think the size is that far off. Take, for example, this Amazon customer photo of someone holding a 250ml bottle of shampoo. Considering the walls of the syringe are significantly thicker than the bottle, I'd expect their outer dimensions to be in roughly the same ballpark. Which appears to be the case. | |
| Aug 30, 2023 at 15:37 | comment | added | Chris H | Anyway the syringes listed on Walmart are from third party sellers, who list them as for scientific use and other applications. Google Lens finds the same photo on eBay ("Nutrient Liquid Food"), as well as AliExpress, they it is apparently for enemas. At this point I'm sure it's badly shooped | |
| Aug 30, 2023 at 15:31 | comment | added | Chris H | @TheSquare-CubeLaw that's a strange and quite possibly dangerous way of doing things, especially with no clear indication that it's for a specific product, and when dilution can vary. I blame bad photoshopping personally, rather than such a strange lie. I have syringes for various brands of infant medicine, all 5ml max, all the same size, and all plausibly close by eye to known-good lab hardware | |
| Aug 30, 2023 at 15:19 | comment | added | The Square-Cube Law | @ChrisH I think the syringe in the pic is measuring how many ml of formula or something you have in a mix of other fluids. I got different syringes for baby and infant tylenol and advil at home gor my kids and the volume they measure not only seems a lot off, they also don't match among themselves. | |
| Aug 30, 2023 at 15:09 | comment | added | Chris H | The first paragraph of the Q rather implies it needs to be the same fluid throughout. The second permits dilution, but doesn't mention liquid that don't mix (otherwise a bucket with a layer of immiscible liquid on top could work). I wonder if grease would be permissible - ask airport security and I'm sure it's a liquid | |
| Aug 30, 2023 at 15:06 | comment | added | Chris H | Also, that's a bizarrely small hand. This is me holding a litre bottle, not that different in proportion to that hand holding a 150ml syringe | |
| Aug 30, 2023 at 15:04 | comment | added | The Square-Cube Law | @ChrisH I agree, but you can use very viscous fluids that don't mix with the potion for sealing too. | |
| Aug 30, 2023 at 15:01 | comment | added | Chris H | Note the rubber piston seal. A sliding metal-on-metal seal isn't easy at all. | |
| Aug 30, 2023 at 3:43 | comment | added | Doktor J | The plungers themselves would likely have markings on them for measurement; numbers toward the center, with lines out to the edges where the plunger meets the body of the syringe. Whichever line is at the opening of the syringe body, that indicates the remaining volume. | |
| Aug 29, 2023 at 19:00 | history | edited | The Square-Cube Law | CC BY-SA 4.0 |
added 179 characters in body
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| Aug 29, 2023 at 15:35 | history | answered | The Square-Cube Law | CC BY-SA 4.0 |
