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  1. What Exactly is Dirac's Delta Function? - Physics Forums

    Aug 29, 2025 · In Dirac's Principles of Quantum Mechanics published in 1930 he introduced a "convenient notation" he referred to as a "delta function" which he treated as a continuum analog to …

  2. Gravitons/ Gravity • Physics Forums

    Apr 4, 2026 · Hi I was wondering what determines whether the Graviton(assuming they exist) get absorbed or pass through an object?

  3. What is "motion theory?" • Physics Forums

    Mar 31, 2026 · Hey, guys. What is "motion theory?" I heard 2 people babbling in a youtube video about "motion theory" and about how it explains physics better. I'm wondering is this just crackpot …

  4. Uultrasonic cleaner trouble. • Physics Forums

    Aug 23, 2025 · I have had a Vevor brand ultrasonic cleaner for several years. I purchased it new. When I first purchased it I tested it out by filling the tank with water and turning it on. For about 30 seconds …

  5. How Do You Integrate (dx/dt) dx in Physics Problems?

    Aug 15, 2015 · The discussion revolves around the integration of the expression ∫ b (dx/dt) ⋅ dx, particularly in the context of physics problems involving work done by forces proportional to velocity, …

  6. How is literally EVERYTHING in physics not binary?

    Jan 17, 2025 · The problem with "sharing what you know" is that unless it commonly accepted, you will need citations. Here's an except from the Terms:

  7. Johns Hopkins Applied Physics Masters online

    Jun 3, 2025 · The discussion centers around the online Master's program in Applied Physics offered by Johns Hopkins University. Participants are exploring the program's structure, its affiliation with the …

  8. Line Spectra of Li2+ & Be3+: Shortest Wavelength - Physics Forums

    Feb 20, 2007 · The discussion focuses on the line spectra of doubly ionized lithium (Li2+) and triply ionized beryllium (Be3+), specifically identifying the shortest wavelength emitted by each. The …

  9. The relationship between friction and mass • Physics Forums

    Jun 17, 2020 · The discussion revolves around the relationship between friction and mass, particularly focusing on static and kinetic friction. Participants explore how mass influences frictional forces and …

  10. Why is HCl called Hydrogen Chloride (by IUPAC naming)?

    Nov 25, 2020 · The discussion revolves around the IUPAC naming of HCl, specifically why it is referred to as hydrogen chloride rather than hydrogen monochloride. Participants explore the implications of …