Chemistry unlike other sciences sprang originally from delusions and superstitions and was at its commencement exactly on a par with magic and astrology. - Thomas Thomson 1773 to 1852 Chemist
A theory is a supposition which we hope to be true a hypothesis is a supposition which we expect to be useful; fictions belong to the realm of art; if made to intrude elsewhere they become either make-believes or mistakes. - George Johnstone Stoney 1826 to 1911 Physicist
Evgeniy Chertovsky (born 1902) Russia – pressure suit.
Alexandru Ciurcu (1854–1922) Romania – Reaction engine.
Arthur William Savage (1857–1938) – radial tires gun magazines Savage Model 99 lever action rifle.
Carl Friedrich Claus (c. 1883) Germany – Claus process (petrochemistry).
Archibald Low (1882–1956) Britain – Pioneer of radio guidance systems.
Neil Arnott (1788–1874) UK – waterbed.
Arthur Fry (born 1931) USA – Post-it note.
Paul Berg (born 1926) USA – created the first Recombinant DNA molecules.
Hasan al-Rammah (fl.1270s) Syria – rocket-propelled torpedo.
Samuel W. Alderson (1914–2005) USA – Crash test dummy.
Stanley Mazor (1941–) USA – microprocessor.
James Dewar (1842–1923) UK – Thermos flask.
Alfred Perot (1863–1925) together with Charles Fabry (1867–1945) France – Fabry–Pérot interferometer (physics).
Yulii Khariton (1904–1996) Russia – chief designer of the Soviet atomic bomb co-developer of the Tsar Bomb.
Francis Rogallo (1912–2009) USA – Rogallo wing.
Shen Kuo (1031–1095) China – improved gnomon armillary sphere clepsydra and sighting tube.
William Bradford Shockley (1910–1989) USA – co-inventor of transistor.
Ira Remsen (1846–1927) USA – saccharin.
Otto Schmitt (1913–1998) USA – Schmitt trigger (electronics).
Leonty Shamshurenkov (1687–1758) Russia – first self-propelling carriage (a precursor to both bicycle and automobile) projects of an original odometer and self-propelling sledge.
Science is the acceptance of what works and the rejection of what does not. That needs more courage than we might think. - Jacob Bronowski 1908 to 1974 Mathematician Biologist
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
Suppose we have an unknown number of objects. When counted in threes 2 are left over when counted in fives 3 are left over and when counted in sevens 2 are left over. How many objects are there? ~ Sunzi The Mathematical Classic of Sunzi - Chinese mathematics problem from c. 450 AD
The finding of the double helix thus brought us not only joy but great relief. It was unbelievably interesting and immediately allowed us to make a serious proposal for the mechanism of gene duplication. ~ James Watson 1928 – Present - Geneticist
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
Pierre Curie voluntarily exposed his arm to the action of radium for several hours. This resulted in damage resembling a burn that developed progressively and required several months to heal. Henri Becquerel had by accident a similar burn as a result of carrying in his vest pocket a glass tube containing radium salt. He came to tell us of this evil effect of radium exclaiming in a manner at once delighted and annoyed: “I love it but I owe it a grudge.” ~ Marie Curie 1867 to 1934
Understanding the history of matter and searching for its most interesting forms such as galaxies stars planets and life seems a suitable use for our intelligence. - Robert Kirshner 1949 to present Astronomer
- 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.