I'll go through each sentence step by step, ensuring that each term not part of a proper noun is replaced with three variants. If a term is part of a proper noun or title, it remains unchanged.
Next term: "theoretical framework" → theoretical model. Game Helper 5.0 Apk Download
"atomic and subatomic level" → microscopic and quantum scale (maybe "atomic and subatomic scale" is more accurate, so synonyms like "microscopic level," "quantum scale," etc. Wait, the original is "atomic and subatomic level," so possible synonyms: quantum level). I'll go through each sentence step by step,
Need to check if any compound terms or titles are left unchanged. For example, "Classical Electrodynamics" by Hans C. Ohanian is a proper title, so those words stay. "atomic and subatomic level" → microscopic and quantum
The article also mentions a PDF version of the textbook by R. Shankar, which refers to the textbook title. The sentence structure might need to be adjusted to include the replacements without altering the book titles.