Make Chirps vs Rilke

This educational app displays gravitational wave chirps created by mergers of massive black holes in several different ways, giving users an intuitive understanding of these exotic disturbances of space-time itself produced by cataclysmic events in distant galaxies. FEATURES: • Simulation: Experience the intricate behavior of gravitational waves through physics simulation of inspiralling black holes that merge to form a final black hole which then “shakes off” its excess energy. • Visualizations: See the essence of gravitational waves via waveform plots, frequency evolutions, and spectrograms, to understand the patterns and how they depend on black hole masses. • Auditory Experience: Listen closely as you hear the evolution of gravitational waves, detecting the characteristic increase in time in strength and frequency. Try varying masses to see how pitch is affected. • Dynamic Animations: Witness the captivating dance of black holes in collision animations. Explore the propagation of these waves through space-time with mesmerizing spiral animations. • Educational Insights: Gain a comprehensive understanding of gravitational waves and the pioneering work of LIGO through informative text pages, enhancing your knowledge of these cosmic phenomena. COMPATIBILITY Compatible with iPhone and iPad, iOS 16 or later. ACKNOWLEDGEMENT Supported by the National Science Foundation with grant PHY-2110181.

Read Rilke as he wrote: in German, line by line, with the English at your side. This is a guided edition of the Neue Gedichte, both parts, 1907 and 1908. One hundred seventy-two poems, The Panther and the Archaic Torso of Apollo among them, nothing cut. Tap any line for a clear translation and a word-by-word gloss; tap any word for its form and its job in the line. The grammar is taught from the poems themselves, not from a textbook. Every poem is read aloud in German. Follow the voice word by word, or let a whole collection play while you listen. When you are ready, say a line back: your reading is scored on your device, and nothing you say leaves it. You don't need any German to begin. The Study tab holds the Foreign Service Institute's German Basic Course of 1961, transcribed word for word and carried by its own tape recordings, the voices of the speakers who made it. Both volumes, from your first sentence to the German Rilke wrote in. - Neue Gedichte, both parts: 172 poems, every line beside a clear English translation - Every word explained: form, meaning, and role in the line - Every poem read aloud, with word-by-word follow-along and continuous playback - Pronunciation practice scored on your device; your voice is never stored or sent - The complete FSI German Basic Course of 1961, its printed text and its own recordings - Notes on grammar and vocabulary, anchored to the line - Spoken scenes for the German you will use away from the page - A Line-of-the-Day widget for your home screen - Your progress stays on your device, with private iCloud sync across your devices The first poems are free. One purchase opens the complete edition, yours forever. No subscription, no account, no ads.