Division is esteemed one of the busiest operations of Arithmetic and such as requireth a mind not wandering or settled upon other matters. ~ Thomas Hylles The arte of vulgar arithmeticke 1600 - Mathematician
Why the dinosaurs died out is not known but it is supposed to be because they had minute brains and devoted themselves to the growth of weapons of offense in the shape of numerous horns. ~ Bertrand Russell 1872 – 1970 - Mathematician and Philosopher
Humberto Fernández Morán (1924–1999) Venezuela – Diamond scalpel Ultra microtome.
Adolphe Sax (1814–1894) Belgium – saxophone.
Ray Dolby (1933–2013) USA – Dolby noise-reduction system.
Gerhard Fischer (1899–1988) Germany/USA – hand-held metal detector.
John Bennett Fenn (1917–2010) USA – Electrospray ionization.
Henry Burden (1791–1871) Scotland and USA – Horseshoe machine first usable iron railed road spike.
Ibn Samh (c. 1020) Middle East – mechanical geared astrolabe.
August Schrader (1820–?) USA – Schrader valve for Pneumatic tire.
Ray Tomlinson (inv. 1971) USA – First inter-computer email.
Al-Ma'mun (786–833) Iraq – singing bird automata terrestrial globe.
Trevor Baylis (born 1937) UK – a wind-up radio.
Archimedes (c. 287–212 BC) Greece – Archimedes' screw.
Abbas Ibn Firnas (Armen Firman) (810–887) Al-Andalus – artificial wings fused quartz and silica glass metronome.
Hans Berger (1873–1941) Germany – first human EEG and its development.
E. K. Gauzen Russia – three bolt equipment (early diving costume).
Gustav de Laval (1845–1913) Sweden – invented the milk separator and the milking machine.
Jonas Edward Salk (1914–1995) USA – injection Polio vaccine.
Auguste Piccard (1884–1962) Switzerland – Bathyscaphe.
Lyman Spitzer (1914–1997) USA – Stellarator (physics).
John Bardeen (1908–1991) USA – co-inventor of the transistor.
Physicists being in no way different from the rest of the population have short memories for what is inconvenient. ~ Anthony Standen 1907 – 1993
A physicist is an atom’s way of knowing about atoms. - George Wald 1906 to 1997 Neurobiologist
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
I believe that thirty million of these animalcules together would not take up as much room or be as big as a coarse grain of sand. ~ Antonie van Leeuwenhoek 1632 to 1723 - Biologist
Every aspect of the world today – even politics and international relations – is affected by chemistry. ~ Linus Pauling - 1901 to 1994
I saw that people trying to synthesize gold and silver were working in ignorance and by false methods; I then perceived that they belonged to two classes the dupers and the duped. I pitied both of them. ~ Geber c. 712 – c. 815 AD
I am busy just now again on electro-magnetism and I think I may have got hold of a good thing. ~ Michael Faraday 1791 – 1867
- 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.