Measure thunder distance with timing
Measure distance by timing lightning and thunder. Press "Start" on lightning and "Stop" on thunder to calculate distance. Includes animation for lightning and sound effect for thunder.
Showing 841–860 of 1,000 ranked alternatives.
Guillermo Gamez
Learn Hiragana and Katakana symbols
Learn Hiragana and Katakana symbols with . Filter by level or quantity. Hear pronunciations via text-to-speech. Swipe through card sides for navigation. View examples with each symbol. Track progress through levels.
Leo Mesentsev
Read and export eBooks in multiple formats
Read and manage eBooks in EPUB, MOBI, PRC, AZW, FB2, PDF, DOC, RTF, xHTML, and TXT formats. Flip pages with animation, add highlights and notes, export books, and use text-to-speech. View books in two-page mode with a searchable table of contents.
Kanta Kikubo
Calculate electrical values and convert units
Perform electrical engineering calculations with and capacitor tools. Calculate filters, attenuators, rectifiers, and oscillators. Convert units like Lumen to Candela and Delta to Y. Analyze skin effect and PCB trace impedance.
Manish Kumar
With quizzes and tests
Students can questions chapter by chapter, take mock tests for comprehensive review, and track performance with detailed statistics. Features include quiz-based learning, performance monitoring, and curriculum-aligned .
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