Back in Time for iPhone vs Voltius

• "...a beautifully executed lesson on the history of the universe" - The New York Times • Winner of the WSA Mobile Award • Top1 iPhone Book App in 10 Countries • Featured by The New York Times (Top10 iPad Apps of the year) • Featured by the American Photo Magazine (Top 10 Photo eBooks of the year) For iPad download - Back in Time Back in Time will take you on a stunning exploration of the history of our Universe, Earth, Life and Civilization. A journey through time where each event is documented with social and historical context, several images, an illustrative timeline and little-known interesting facts. Custom made animations bring those events to life, creating an interesting, immersive learning experience. An imaginary clock will guide you through this quest, proposing a simple analogy: the entire Universe started 24 hours ago. The Big Bang, the source of time and space, is the first event in our journey – the clock reads 0:00 hours. Today, 13.7 billion years later, the clock reads midnight. In between is a sequence of key events that has brought us to where we are today. Explore them, place them in perspective, see how they relate and understand the connections. We invite you to take a step back and see the whole picture. :::: REVIEWS - iPad version :::: "The coolest history textbook you’ll find on the iPad" - Bob Tedeschi, The New York Times “The iPad could use more apps like this one.” - The Daily “...a beautifully executed lesson on the history of the universe and the evolution of life on earth. Great for high school students or parents who’d like to tutor younger children and enjoy a first-rate experience of their own...” - Bob Tedeschi, The New York Times “...the best iPad apps are those that combine coffee table-styled books with the fluid nature of the iPad’s interface. Back in Time is just that, it’s the story of the entire history of our universe made interactive on the iPad.” - Casey Chan, Gizmodo (App of the Day) “Back in Time is utterly gorgeous in its presentation. (...) The app is so easy to navigate that it is a delight to explore. Landka could scarcely have done a better job in putting everything together.” - Gwen Phua, Appmodo :::: FEATURES :::: Designed for iPhone; 47 chapters; Over 350 remarkable images; 60+ amazing animations and videos; 40+ illustrated timelines; More than 200 little-known interesting facts; Music by the compositor Rodrigo Leão; Developed in 7 different languages (English, Spanish, German, French, Portuguese, Japanese and Chinese); No internet connection required.

Voltius supports electrical conductor sizing using selected tables and criteria from the Brazilian NBR 5410 standard. It is intended for engineers, electricians and technicians working with low-voltage electrical installations. FEATURES • Installation methods A1, A2, B1, B2, C, D, E, F and G, with simplified selection for A and B. • Copper and aluminum conductors; PVC 70°C and EPR/XLPE 90°C insulation. • Ampacity-based conductor size preview. • Voltage-drop calculation when voltage and length are provided, with an option to recalculate conductor size. • Temperature and grouping correction factors. • Layers and parallel conductors for supported combinations, with messages when a specific engineering assessment is required. • Neutral conductor cross-section display. • Light and dark themes. • Interface available in Portuguese, English and Spanish. REFERENCE AND SCOPE NBR 5410:2004, corrected version 2008 — Low-voltage electrical installations. This app does not replace consultation of the official standard or assessment of a complete installation. The current-only preview does not check voltage drop. Results must be validated by a qualified professional. CALCULATION REPORT Export a PDF with inputs, formulas, calculation steps and assumptions. Compare sizing by current-carrying capacity, resistance-only voltage-drop resizing and resizing with estimated reactance. Set power factor, inductive or capacitive load and 50 or 60 Hz frequency in advanced parameters. The model uses resistance corrected for the assumed conductor temperature and approximate reactance. It does not verify actual cable temperature or current balance between parallel conductors; cases requiring these checks remain identified as unvalidated previews.