Trafiko vs Optics Simulator

‣ Driving School in Your Mobile: Theory, Driving Lessons & Courses With Trafiko, you can do everything needed to get your driving licence directly in the app: study theory, book driving lessons, and schedule risk training. It’s both easier and more affordable than traditional driving schools. ‣ Pass-the-Test Guarantee You can feel confident that you will pass the Swedish Transport Administration’s theory test on your first attempt when you study with Trafiko. We guarantee that you will pass the theory test, or you will get your money back. ‣ Get Your Driving Licence in 2 Weeks Get your driving licence quickly with our two-week intensive course. The course includes everything you need to pass. ‣ Complete Theory with Videos & Theory Questions Learn all the theory you need, step by step. At each stage, you can choose to watch a video, listen to an audiobook, or read. Then answer theory questions related to what you’ve just learned. ‣ Driving Lessons with Free Pick-up Want your driving lesson to start at home, at school or even at your workplace? When you book driving lessons with Trafiko, free pick-up is always included. Of course, the pick-up time does not take away from your lesson duration. ‣ Book Risk Training Part 1 & Risk Training Part 2 In the app, you can easily book all the mandatory courses needed to get your driving licence: risk training part 1 and risk training part 2. ‣ Driving Licence Book 2026 as Audiobook & E-book Listen to the latest Driving Licence Book 2026 as an audiobook or read it as an e-book directly in the app. ‣ Theory in Multiple Languages: Swedish, English, Arabic & Persian All theory questions, the audiobook and the e-book are available in Swedish, English, Arabic, and Persian. Switch languages whenever you like.

Optics Simulator turns the equations of clinical optics into live, interactive ray diagrams. Move an object, slide a lens along the optical axis, change diopters, rotate a prism — and watch the geometry, focal points, image position, and magnification update in real time. Each simulator displays its governing equation in textbook serif math, with the current numerical values substituted alongside, so you can connect the picture to the formula. A built-in practice section quizzes the underlying concepts with parameterised diagrams (the answer is hidden in the stem and revealed once you check your work). INCLUDED SIMULATORS • Snell's Law and Total Internal Reflection — refraction at an interface • Vergence and Thin Lenses — draggable object and lens, full three-ray construction • Schematic Eye — cornea + crystalline lens + axial length; lens shape changes with power • Refractive Errors — myopia and hyperopia with a spectacle at adjustable vertex distance • Lens Effectivity — see how moving a lens toward the eye changes effective power • Astigmatism — the Conoid of Sturm with a cross-section explorer • Telescopes — Galilean and Keplerian, both lenses are draggable • Simple Magnifier — at, inside, or beyond the focal length • Mirrors — concave, convex and plano, with C and F marked • Prisms — clinical prism diopters and geometric minimum-deviation REFERENCE • A formula sheet with every equation the app uses, typeset in serif math • Built-in practice problems organised by section DESIGN • Black-and-white interface so the colored rays remain the most prominent thing on screen • Adaptive layout: simulator stays visible alongside the controls in landscape • No accounts, no ads, no tracking, no internet connection required For health-profession students, ophthalmology residents, optometry students, and anyone who would rather see optics work than memorise formulas.