Cast iron heads.
Answer One description: A process used to determine if a head is cracked. The head is magnatized using a powerful electromagnet, then iron filings are sprayed on the head to check for cracks. Patterns in the filings indicate either a cracked or normal head. This process works on cast iron heads but not on aluminum heads. The answer given above is incorrect. Magnaflux is a product use to check for cracks and other discontinuities, but it has nothing to do with Magnetization. Magnaflux is a (3) part process using (a) Cleaner (b) Penetrant (c) Developer. The answer given above would be for the question, "What is Mag-particle Testing"?
The process used to detect and identify dyes in colorings is called chromatography. This technique separates the dyes based on their properties such as size and charge, allowing for identification by comparing them with known standards.
Depends where it's cracked. This was a common problem with the 6.2 Detroit Diesels that GM used from 1984 - 1993. You'd have to magnaflux the head, find the cracks, drill a hole and tap it, fill it with a bolt, cut off the remainder of the bolt, then smooth it all down. Not someone you really want to "learn as you go" on your own vehicle.
Digital watermarks, also known as "fingerprinting."
Sheetrock tape is used in the process of drywall installation to reinforce the seams between drywall panels, preventing cracks and ensuring a smooth surface for finishing.
A polygraph is used to help detect if someone is lying.
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A Propoxyphene test is used to detect Darvocet.
The explorer is used by the dentist to detect decay.
There is a product called Concrete Resurfacer that is used to fill in cracks in the driveway. Here is a link with a guide on exactly how to do this: http://www.dannylipford.com/home-improvement-video/how-to-repair-cracks-in-concrete/
Helium is used to detect leaks.
Yes, sheetrock mud can stick to wood when used for patching holes and cracks.