Vol. 9 No. 2 (2024): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 9 Issue 2, August 2024

SPEKTRA Volume 9 issue 2 contains five papers: 1) Thickness Measurement and Sensitivity of Copper/Nickel Electroplating Results of Electrolyte Solution Temperature Variation, 2) Exploring Weak Gravitational Lensing Effects by a Regular Black Hole, 3) Enhanced Approaches to Gravitational Lensing: A Regular Charged Black Hole in Weak Field Limit, 4) Synthesis Process and Nutritional Evaluation of Plantain as a Supplementary Food for Toddlers in Sierra Leone: A Study Utilizing Biuret’s, Benedict’s, and Iodine Solution Test, and 5) Gravitational Lensing for A Spherically Symmetric Regular Charged Black Hole in Weak Field Limit.

The articles in this issue from 2 countries: Indonesia and Sierra Leone. We are grateful for all the contributions of the authors. We also appreciate the professional reviewers who are an essential part of this issue.