Ampere vs Permit2Drive

Explore plasma physics through interactive simulations and transparent educational calculators. SIMULATE PLASMA PHENOMENA • Guide animated plasma-globe filaments • Explore a Paschen-law glow-discharge model • Drive a 13.56 MHz RF reactor solved by a global discharge model • Adjust an illustrative tokamak control visualization CALCULATE CORE PARAMETERS • Debye shielding length • Electron plasma frequency • Paschen breakdown voltage • Synthetic planar Langmuir-probe response • Lossless 13.56 MHz RF L-network matching • Bohdansky physical sputter-yield estimates Ampere works offline and requires no account or purchase. Every advanced model states its assumptions and limitations. Results are intended for education and first-pass exploration, not professional engineering or safety decisions.

Keep your learner driver’s practice hours organized—from the first drive to the completed driving log. Permit2Drive is a free app for learner drivers and families. Track total and nighttime hours, share a driving log through separate accounts, and export your records when you need them. Already using RoadReady? Import your existing driving hours and pick up where you left off. TRACK YOUR DRIVING HOURS Start a drive in seconds, pause for breaks, and resume when you’re ready. Record driving conditions and notes, then see your total hours, nighttime hours, and drive history in one place. SEPARATE ACCOUNTS. ONE SHARED LOG. Parents, teens, and supervisors can access the same driving log using their own accounts. Invite family members or supervisors without sharing your password. Manage multiple learner drivers in one app. EXPORT YOUR STATE’S DRIVING LOG Export official driving-log forms for supported states, or create a general PDF or CSV for your records. See the current list of supported forms at: https://permit2drive.com/state-requirements IMPORT FROM ROADREADY OR CSV Bring your existing drives into Permit2Drive from a RoadReady PDF or a compatible CSV file. Keep the practice hours you’ve already recorded without entering each drive again. KEEP YOUR RECORDS BACKED UP Your account keeps saved driving logs synced and available when you sign in again or change devices. MAKE IT YOUR OWN Choose an appearance that fits your style while keeping the same straightforward logging experience. FREE, WITH AN OPTIONAL AD-FREE UPGRADE Use Permit2Drive for free with ads, or remove ads with a one-time purchase. The ad-free upgrade has no recurring subscription fee. YOUR PRACTICE HOURS, WITHOUT LOCATION TRACKING Permit2Drive records the driving hours you log without tracking your route or monitoring your driving behavior. We don’t sell your driving-log information to insurance companies or add you to a promotional email list. Account and service emails may still be sent when needed. CONTROL YOUR SHARED LOG Choose who can access your driving log, export a copy of your records, and delete your account and driving-log data from within the app. Created by parents who went through the learner-permit process with their own son, Permit2Drive helps families spend less time managing paperwork and more time practicing driving. Questions or feedback? Contact help@permit2drive.com.