What exactly is mathematics? Many have tried but nobody has really succeeded in defining mathematics; it is always something else. Roughly speaking people know that it deals with numbers figures with relations operations and that its formal procedures involving axioms proofs lemmas theorems have not changed since the time of Archimedes. ~ Stan Ulam 1909 – 1984 - Mathematician
Geometry is one and eternal shining in the mind of God. That men share in it is among the reasons that Man is the image of God. ~ Johannes Kepler 1571 – 1630 Mathematician and Astronomer
Abū Rayhān al-Bīrūnī (973–1048) Persia/Iran – mechanical geared lunisolar calendar laboratory and surveying equipment..
Alexey Pajitnov (born 1956) Russia/USA – Tetris.
Augustin-Jean Fresnel (1788–1827) France – Fresnel lens.
Robert Cailliau (born 1947) Belgium – with Tim Berners-Lee the World Wide Web.
Konosuke Matsushita (1894–1989) Japan – a.o. battery-powered Bicycle lighting.
Stephen Perry UK (fl. 19th century) – rubber band.
Frank Whittle (1907–1996) UK – co-inventor of the jet engine.
Alberto Santos-Dumont (1873–1932) Brazil – non-rigid airship and airplane.
Simon Sze (born 1936) Taiwan/USA together with Dawon Kahng (1931–1992) South Korea – Floating-gate MOSFET.
Richard F. Lyon (1952–) USA – Optical mouse.
Bernard Tellegen (1900–1990) Netherlands – pentode.
Josephine Cochrane (1839–1913) USA – dishwasher.
Gleb Kotelnikov (1872–1944) Russia – knapsack parachute drogue parachute.
David Schwarz (1852–1897) Croatia – rigid ship later called Zeppelin.
Tim Berners-Lee (born 1955) UK – with Robert Cailliau the World Wide Web.
William Henry Perkin (1838–1907) United Kingdom – first synthetic organic chemical dye Mauveine.
David L. Mills (born 1938) USA – a.o. Fuzzball router Network Time Protocol.
Hub van Doorne (1900–1979) Netherlands Variomatic continuously variable transmission.
Aleksandr Porokhovschikov (1892–1941) Russia – Vezdekhod (the first prototype tank or tankette and the first caterpillar amphibious ATV).
Jacques E. Brandenberger (1872–1954) Switzerland – Cellophane.
Our thoughts visions and fantasies have a physical reality. A thought is made of hundreds of electrochemical impulses. ~ Carl Sagan 1934 to 1996 Astrobiologist Planetary Scientist
Every aspect of the world today – even politics and international relations – is affected by chemistry. ~ Linus Pauling - 1901 to 1994
We think there is color we think there is sweet we think there is bitter but in reality there are atoms and a void. ~ Democritus c. 460 – c. 370 BC
Botany consists in the gathering of plants and the dismembering of them in connection with the use of a complicated terminology. That is the beginning and end of botany as it is understood by the majority. ~ Herbert Maule Richards 1871 to 1928 - Botanist
Chemists do not usually stutter. It would be very awkward if they did seeing that they have at times to get out such words as methylethylamylophenylium. ~ Sir William Crookes - 1832 to 1919
It is strange that only extraordinary men make the discoveries which later appear so easy and simple. - Georg C. Lichtenberg 1742 to 1799 Physicist
The black holes of nature are the most perfect macroscopic objects there are in the universe: the only elements in their construction are our concepts of space and time. - Subrahmanyan Chandrasekhar 1910 to 1995 Astrophysicist
- Connectivity: Wirelessly connect and control a wide range of compatible smart devices from 40+ partner brands, including voice assistants, lights & switches, speakers, cameras, sensors and more
- Home Automation: Teach the hub your Good Morning, Goodbye, Goodnight, and other routines to automatically turn devices on or off throughout the day
- 24/7 Monitoring: Receive app alerts from connected devices when there's unexpected activity in your home.Material: Plastic
- Voice Controls: Use voice commands to control connected devices using SmartThings and the Google Assistant
- Improved DIY Solution: Improved guided onboarding for easier setup. Hub connects with Wi-Fi so does not need to be connected to an Ethernet cable
- VOICE ACTIVATED: With the Philips Hue Smart Hub, add up to 50 Philips Hue smart lights of your choice with this ZigBee-controlled hub necessary for voice control with Alexa, Apple HomeKit, or Google Assistant
- CONTROL YOUR SMART LIGHTS FROM ANYWHERE: The heart of your Philips Hue system, this hue hub also enables you to control all of your Philips Hue products via the Philips Hue app, even when you're away from home
- FULLY AUTOMATE YOUR SMART HOME: Enhance your Philips Hue system by setting timers and alarms, connecting to a variety of apps, dimming the smart lights and more (cannot be used with conventional dimmers)
- EXPAND YOUR ECOSYSTEM: Easily expand your smart lighting system with Philips Hue accessories (sold separately), such as a Hue Dimmer Switch, Hue Tap, or Hue Motion Sensor. Pair it for home automation with your existing Nest or SmartThings system. Control your hue lights by connecting the Hue Hub to your router with the included ethernet network cable. This box also includes one Philips Hue Hub, power adapter, manual, and two-year warranty for the full Philips Hue experience
- CROSS-DEVICE COMPATIBILITY: HomeKit compatible iOS 9 or later. iPhone:4, 4S, 5, 5S, 6, 6 Plus, 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone Xs, iPhone Xs Max, iPhone Xr, iPod touch: 5th generation.Network Connectivity:Wireless A,Wireless B,Wireless G,Wireless N
- Connect your Home: The brains of the Sengled system, the hub enables you to control up to 64 Sengled Smart lights and accessories with the hub. A hub is necessary to use a voice assistant, like Alexa and Google Assistant
- Easy to Install: Connect the Sengled Smart Hub to your router using the included Ethernet cable and use the in-app guide to set up
- Home Automation: Easily extend your smart home system across every room by connecting Sengled Smart LEDs and accessories to the hub, then automate
- Voice control: Connect the hub to Alexa or Google Assistant-enabled devices and use your voice to control your Sengled Smart LEDs and accessories
- One simple app: Control all your Sengled smart devices using the Sengled Home app (iOS/Android.) Set schedules, group devices and more to control all of your home's Sengled smart products