Science

1. Lightning Detector
2. Geomagnetic field detector
3. Infrared detector
4. Seismic detector
5. Magnetic Gun
6. Electromagnetic field detector
7. Field-strength meter
8. Plants Watering Watcher
9. Muscular Bio-Stimulator
10. Sleeping-Aid
11. Magnetic-Radiation Remote-Control
12. Salt Taster
13. Air Flow Detector
14. Electronic Stethoscope
15. Electronic Stethoscope-2
16. Rain Detector
17. High Voltage Stun Gun
18. Mini efficient coil launcher from disposable camera flash
19. Plants Watering Watcher-2