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.
Manage account, register for classes, receive notifications
Manage account details, register for classes and events, and receive notifications about class changes, closings, registration openings, special announcements, and upcoming events.
View real-time activity including eruptions and geomagnetic storms. Track flares and coronal mass ejections. Access up-to-date space weather forecasts. Explore detailed sun facts and educational content about phenomena.
The app converts between the current hour system and old Japanese hour systems. It includes fixed and temporal hour systems with multiple historical types for reading documents or adjusting clocks.
Track visibility with real-time direction and elevation updates. Locate comets using the moon and bright planets as guides. Set observation times and directions based on your location. Share sighting details and view movement patterns over time.
