In practical applications we are concerned only with comparatively small numbers; only stellar astronomy and atomic physics deal with ‘large’ numbers and they have very little more practical importance as yet than the most abstract pure mathematics. ~ G. H. Hardy 1877 – 1947 - Mathematician
I am not insensible of the advantage which accrues to Applied Mathematics from the co-operation of the Pure Mathematician and this co-operation is not infrequently called forth by the very imperfections of writers on Applied Mathematics. ~ Ronald Fisher 1890 – 1962 - Mathematician Statistician Evolutionary Biologist
Charles F. Brannock (1903–1992) USA – Brannock Device (shoe size).
Pavel Molchanov (1893–1941) Russia – radiosonde.
Leonard Rivkin (inv. 1962) USA – Child safety seat.
John Bennett Fenn (1917–2010) USA – Electrospray ionization.
Gerd Binnig (born 1947) together with Heinrich Rohrer (1933–2013) Germany/Switzerland – Scanning tunneling microscope.
Frank Hornby (1863–1936) UK – invented Meccano.
Claude Chappe (1763–1805) France – Semaphore line.
Sharaf al-Dīn al-Tūsī (1135–1213) Persia/Iran – linear astrolabe.
John Bennet Lawes (1814–1900) UK – superphosphate or chemical fertilizer.
Edwin H. Land (1909–1991) USA – Polaroid polarizing filters and the Land Camera.
Elihu Thomson (1853–1937) UK USA – Prolific inventor Arc lamp and many others.
Bartolomeo Cristofori (1655–1731) Italy – piano.
Nikola Tesla (1856–1943) Croatia/Serbia – induction motor high-voltage / high-frequency power experiments the transmission of electrical power.
George Constantinescu (1881–1965) Romania – creator of the theory of sonics a new branch of continuum mechanics.
Elmer R. Gates (1859–1923) USA – foam fire extinguisher electric loom mechanisms magnetic & diamagnetic separators educational toy ("box & blocks")*.
Mardi bin Ali al-Tarsusi (c. 1187) Middle East – counterweight trebuchet mangonel.
Bryan Donkin (1768–1855) UK – print industry composition roller.
Carl Roman Abt (1850–1933) Switzerland – Abt rack railway system.
Ami Argand (1750–1803) France – Argand lamp.
Aleksandr Loran (1849 – after 1911) Russia – fire fighting foam foam extinguisher.
Everything that human beings or living animals do is done by protein molecules. And therefore the kind of proteins that one has and therefore the ability one has is determined by the genes that one has. ~ Har Gobind Khorana 1922 – 2011 - Molecular Biologist
Trial by combat of wits in disputations has no attraction for the seeker after truth; to him the appeal to experiment is the last and only test of the merit of an opinion conjecture or hypotheses. ~ Joseph Mellor - 1869 to 1938
Macroscopic objects as we see them all around us are governed by a variety of forces derived from a variety of approximations to a variety of physical theories. In contrast the only elements in the construction of black holes are our basic concepts of space and time. They are thus almost by definition the most perfect macroscopic objects there are in the universe. ~ Subrahmanyan Chandrasekhar 1910 to 1995
The uniform character of mathematics is the essence of science for mathematics is the foundation of all exact scientific knowledge. ~ David Hilbert 1862 – 1943 Mathematician
The ultimate truths of mathematics then cannot be established by any experimental proof that the deductions from them are true; since the supposed experimental proof takes them for granted. ~ Herbert Spencer 1885 – 1977 - Philospher
Before the Copernican revolution it was natural to suppose that God’s purposes were specifically concerned with the earth but now this has become an unplausible hypothesis. If it is the purpose of the Cosmos to evolve mind we must regard it as rather incompetent in having produced so little in such a long time. ~ Bertrand Russell 1872 – 1970 - Mathematician and Philosopher
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
- 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.