![Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com](https://study.com/cimages/multimages/16/1curvedmirror8320996962080431235.png)
Focal Length Formula & Examples | How to Calculate Focal Length - Video & Lesson Transcript | Study.com
![Book review: “Semi-Classical Analysis for Nonlinear Schrödinger Equations: WKB Analysis, Focal Points, Coherent States” by Rémi Carles | EMS Press Book review: “Semi-Classical Analysis for Nonlinear Schrödinger Equations: WKB Analysis, Focal Points, Coherent States” by Rémi Carles | EMS Press](https://ems.press/_next/image?url=https%3A%2F%2Fcontent.ems.press%2Fassets%2Fpublic%2Fimages%2Fserial-issues%2Fcover-mag-issue-127.png&w=3840&q=90)
Book review: “Semi-Classical Analysis for Nonlinear Schrödinger Equations: WKB Analysis, Focal Points, Coherent States” by Rémi Carles | EMS Press
![Cold War Focal Point: Southeast Asia Today—and Tomorrow. Richard Butwell. Praeger, New York, 1961. x + 182 pp. Illus. Paper, $1.75. | Science Cold War Focal Point: Southeast Asia Today—and Tomorrow. Richard Butwell. Praeger, New York, 1961. x + 182 pp. Illus. Paper, $1.75. | Science](https://www.science.org/cms/10.1126/science.136.3515.511.b/asset/84e0db40-875d-4484-ad33-7e45387824bd/assets/science.136.3515.511.b.fp.png)
Cold War Focal Point: Southeast Asia Today—and Tomorrow. Richard Butwell. Praeger, New York, 1961. x + 182 pp. Illus. Paper, $1.75. | Science
![Focal-point-analysis table of the pure electronic first dissociation... | Download Scientific Diagram Focal-point-analysis table of the pure electronic first dissociation... | Download Scientific Diagram](https://www.researchgate.net/publication/360536282/figure/tbl2/AS:11431281100851851@1669407253740/Focal-point-analysis-table-of-the-pure-electronic-first-dissociation-energy-of-HHe-2.png)