Zorgas
Zorgas t1_je2x3u9 wrote
Reply to comment by nosnevenaes in We will eventually find every question we have about the universe but we will never find out what happens after death by Pokemasterkendrew06
If there is nothing, if our computer just switches off, then it can't be found out because our ability to perceive is stopped too.
Zorgas t1_j9y41gw wrote
Reply to How to fix a tiny hole in couch fabric? by Kryym
If it's a removable cover: put a bit more than a dab of fabric glue on a small square of fabric (say 4x the size of the hole) and glue said fabric square to the under/back side of the hole.
While glue is damp, get a needle and straighten the fibres out to sort of stretch/cover the hole.
If not a removable cover move the fibres around then put less fabric glue, applied with needle so it's very fine, just where broken fibres are.
Lots of quick vids on YouTube.
Zorgas t1_jed8wp1 wrote
Reply to How does toothpaste fluoride make teeth stronger topically? by Gilem_Meklos
Teeth enamel is permeable, you can see this by people who smoke having yellowed teeth, people who drink sugary drinks having yellowed teeth etc
Visually it's quite amazing how rough the enamel is upon magnification!
Fluoride, being a mineral suspended in water or, in this case, toothpaste, can go into the small gaps and divets in the enamel. It bonds into the little divets and acts like a shield against bacteria and other gunk.