There is no law except the law that there is no law. - John Archibald Wheeler 1911 to 2008 Theoretical Physicist
An experiment is a question which science poses to Nature and a measurement is the recording of Nature’s answer. - Max Planck 1858 to 1947 Theoretical Physicist
Cornelis Corneliszoon (1550–1607) The Netherlands – sawmill.
William H. Dobelle (1943–2004) United States – first functioning artificial eye.
Mikhail Gurevich (1893–1976) Russia – MiG-series fighter aircraft including world's most produced jet aircraft MiG-15 and most produced supersonic aircraft MiG-21 (together with Artem Mikoyan).
Aleksandr Porokhovschikov (1892–1941) Russia – Vezdekhod (the first prototype tank or tankette and the first caterpillar amphibious ATV).
J. Stuart Blackton (1875–1941) USA – stop-motion film.
George Constantinescu (1881–1965) Romania – creator of the theory of sonics a new branch of continuum mechanics.
Vladimir Simonov (born 1935) Russia – APS Underwater Assault Rifle SPP-1 underwater pistol.
Shen Kuo (1031–1095) China – improved gnomon armillary sphere clepsydra and sighting tube.
Levi Strauss (1829–1902) USA – blue jeans.
Edwin H. Land (1909–1991) USA – Polaroid polarizing filters and the Land Camera.
Adolph Rickenbacker (1886–1976) Switzerland – Electric guitar.
David Brewster (1781–1868) United Kingdom – Kaleidoscope.
Kary Mullis (born 1944) USA – PCR.
Thomas Wedgwood (1771–1805) UK – first (not permanent) photograph.
Percy Spencer (1894–1970) USA – microwave oven.
Evangelista Torricelli (1608–1647) Italy – barometer.
Arnold O. Beckman (1900–2004) USA – electric pH meter.
Christopher Polhem (1661–1751) Sweden – the modern padlock.
James Watt (1736–1819) Scotland – improved Steam engine.
Giovanni Luppis or Ivan Vukić (1813–1875) Austrian Empire (ethnical Croatian from Rijeka) – self-propelled torpedo.
A cylinder of air reaching to the top of the atmosphere is of equal weight with a cylinder of water about 33 feet high. ~ Isaac Newton 1642 to 1727
The chief philosophical value of physics is that it gives the mind something distinct to lay hold of which if you don’t Nature at once tells you you are wrong. ~ James Clerk Maxwell 1831 to 1879
Simple laws can very well describe complex structures. The miracle is not the complexity of our world but the simplicity of the equations describing that complexity. ~ Sander Bais b. 1945 - Theoretical Physicist
Outstanding examples of genius – a Mozart a Shakespeare or a Carl Friedrich Gauss – are markers on the path along which our species appears destined to tread. - Fred Hoyle 1915 to 2001 Astrophysicist
We are storytelling animals and cannot bear to acknowledge the ordinariness of our daily lives. - Stephen Jay Gould 1941 to 2002 Paleontologist
I believe there are 15 747 724 136 275 002 577 605 653 961 181 555 468 044 717 914 527 116 709 366 231 425 076 185 631 031 296 protons in the universe and the same number of electrons. - Sir Arthur Eddington 1882 to 1944 Astronomer Physicist Mathematician
It does not help that some politicians and journalists assume the public is interested only in those aspects of science that promise immediate practical applications to technology or medicine. - Steven Weinberg 1933 to present Theoretical Physicist
- On demand access - access 720p HD live video at any time from your smartphone or the web, with built-in night vision.
- Personalized voice message - a recorded message will play when you can't answer the door.If the lights are solid blue, please type + , choose Wireless Device instead of Zink to find the doorbell.
- Answer the door wherever you are - see and speak to visitors directly from your smartphone.If all the lights are flashing green, please check your smartphone and make sure it is connected to a 2.4Ghz wifi network. If your router is a dual band router, meaning it supports both 5.0Ghz and 2.4Ghz networks, be sure the SSID (network name) is different for each. You will need your mobile device to be connected to the 2.4Ghz during setup. Passwords and SSID names must be a minimum of 6 characters.
- Smart motion detection - receive an alert and a recorded video clip whenever motion is detected.
- Easy setup - use existing wiring for quick installation and connect to WiFi using the free Zmodo app. Use Beam to easily set up Greet. With Beam Connect, setup is as simple as telling the app how many devices are powered on and ready to pair. If your router supports AC, you will need to disable that during the setup. In your router, you may need to take it out of mixed mode, or put it into legacy mode.
- See, hear and speak to anyone at your door from your smartphone, tablet or PC.
- Get instant alerts when visitors press your Doorbell or trigger the built-in motion sensors.
- Watch over your home in crystal-clear HD video.
- Protect your home - day or night - with infrared night vision.
- Communicate with visitors via two-way audio with noise cancellation.
- WIFI signal,the whole network interconnection. Remote calling, intercom, and unlock. Using most popular touch key technology, advanced and high Sensitivity, greatly extend the key life. Clear camera, and equipped with automatic light sensitive chip. If the light is not enough, it will use the IR night vision function to monitor and capture HD video and pictures.
- Motion detection function. You can open or close this function according to different working environments. Capture and video mode for choosing. Powered by DC 5V, more safe.
- Simple app operation in mobile phone, easy installation. support anrdoid and ios app APP download address remind: please search " door phone" for apple store(for ios app) and for google player(for android app).
- High-strength tempered glass surface, luxury, anti-resistant and scratches, has longer working life. With rain cover and touch key surface, better waterproof function.
- Easy to install. You can fix it with screws, or paste with double-sided tape. One door phone can be connected to several mobile phone, PC, or computers. Optional indoor dingdong doorbells to match. While calling to the mobile phone, the indoor doorbell will ring too.