Learn English words during spare time with flashcards, progress tracking via analysis graphs, and customizable study modes including game, listening, and list modes. Set goals and review vocabulary for improved retention.
Calculate magnification and apply Barlow lens adjustments
Calculate magnification using telescope and eyepiece focal lengths. Input values in millimeters. Include 2x to 5x Barlow lens options. Perform calculations for amateur and professional astronomers. Display results directly.
Japanese language reference allows users to look up words with furigana and textbook-style fonts. Filter entries by grade level or kanji components. Search with mixed kana and kanji. Use iPad camera to attach photos to word explanations.
