Simulates a retro scientific calculator with RPN input. Features a 10-digit LED display, four stack registers, and a storage register. Includes math, trigonometric, and logarithmic functions. Displays results in polar/rectangular formats.
Build with personalized learning paths and interactive modes. Choose difficulty levels and bookmark words for custom lists. Use flashcards and multiple-choice quizzes to test knowledge. Track progress and review words regularly.
Learn English with flashcards using a smart SRS system and Leitner method. Watch videos and podcasts with instant word highlights. Use an interactive dictionary for US English vocabulary. Track progress and set learning goals.
Helps users calculate measurements with fraction, decimal, and board foot tools. It includes a library of 31 species with images and properties. Features also cover lumber grades, grain orientation, joinery types, and guides for adhesives and screws.
Learn concepts through bite-sized videos and quizzes. Access chapters on entrepreneurship, MBA, accounting, and more. Engage with an AI-driven coach for personalized guidance. Track progress with interactive assessments and weekly learning goals.
Adjust ion concentrations and visualize potentials
Calculate and visualize Nernst and Goldman potentials based on user-defined ion concentrations and permeability. Adjust extracellular and intracellular concentrations of potassium, sodium, and chloride ions.
Study Electrical Theory, Safety Rules, Circuits, Motors, Transformers, and NEC codes. Take practice tests with random questions. Access mock exams for preparation. Track progress through practice and study modes.