Nearly 2.5 billion years of prokaryotic cells and nothing else – two-thirds of life’s history in stasis at the lowest level of recorded complexity… Why did life remain at stage 1 for two-thirds of its history if complexity offers such benefits? ~ Stephen Jay Gould 1941 to 2002 - Paleontologist
Benjamin Franklin performed a beautiful experiment using surfactants; on a pond at Clapham Common he poured a small amount of oleic acid a natural surfactant which tends to form a dense film at the water-air interface. He measured the volume required to cover all the pond. Knowing the area he then knew the height of the film something like three nanometers in our current units. ~ Pierre-Gilles de Gennes 1932 to 2007
Min Chueh Chang (1908–1991) together with Gregory Goodwin Pincus (1903–1967) USA/China – Combined oral contraceptive pill.
William H. Dobelle (1943–2004) United States – first functioning artificial eye.
John Herschel (1792–1871) UK – photographic fixer (hypo) actinometer.
Edwin Beard Budding (1795–1846) UK – lawnmower.
Christian Schnabel (1878–1936) German – simplistic food cutleries.
George H. Heilmeier (born 1936) USA – liquid crystal display (LCD).
Niklaus Riggenbach (1817–1899) Switzerland – Riggenbach rack railway system Counter-pressure brake.
Robert Cailliau (born 1947) Belgium – with Tim Berners-Lee the World Wide Web.
Ross Granville Harrison (1870–1959) USA – first successful animal Tissue culture Cell culture.
Pavel Schilling (1786–1837) Estonia/Russia – first electromagnetic telegraph mine with an electric fuse.
Michael Smith (1932–2000) USA – Site-directed mutagenesis (molecular biology).
Alexei Tupolev (1925–2001) Russia – the Tupolev Tu-144 (first supersonic passenger jet).
Alexander Procofieff de Seversky (1894–1974) Russia/United States of America – first gyroscopically stabilized bombsight ionocraft also developed air-to-air refueling.
Vladimir Sergeyevich Vakhmistrov (1897–1972) Russia – first bomber with a parasite aircraft (Zveno project).
Gustav de Laval (1845–1913) Sweden – invented the milk separator and the milking machine.
Jacob Rabinow (1910–1999) USA – a.o. Magnetic particle clutch various Phonograph-related patents.
Fathullah Shirazi (c. 1582) Mughal India – early volley gun.
Abu-Mahmud al-Khujandi (c. 940–1000) Persia/Iran – astronomical sextant.
Pavel Cherenkov (1904–1990) Russia – Cherenkov detector.
Miller Reese Hutchison (1876–1944) USA – a.o. Klaxon electric hearing aid.
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
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
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
The country which is in advance of the rest of the world in chemistry will also be foremost in wealth and in general prosperity. ~ William Ramsay - 1852 to 1916
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
Euclid’s work ought to have been any educationist’s nightmare… it never offers any “motivations ” it has no illuminating “asides ” it does not attempt to make anything “intuitive ” and it avoids “applications” to a fault. It is so “humorless” in its mathematical purism that… …it should have been spurned by students and “progressive” teachers in every generation. But it nevertheless survived intact all the turmoils ravages and illiteracies of the dissolving Roman Empire of the early Dark Ages of the Crusades and of the plagues and famines of the later Middle Ages. ~ Salomon Bochner 1899 – 1982 - Mathematician
But though the professed aim of all scientific work is to unravel the secrets of nature it has another effect not less valuable on the mind of the worker. It leaves him in possession of methods which nothing but scientific work could have led him to invent. ~ James Clerk Maxwell 1831 to 1879
- $5 Preloaded 30-Day wireless service at 2¢ per VOICE TEXT & 2¢/MB nationwide 2G 3G & 4G LTE Data. That's 250 minutes talk or 250 texts or 250 MB Data.
- Our prepaid sim cards are designed for users that need a minimal amount of airtime each month/year. Sim card is free and pre-cut in 3 sizes to fit any device, standard-sized SIM, Micro-sized SIM or/and a Nano-sized SIM card.
- Supports GPS tracking devices such as but not limited to vehicle trackers, kid/pets tracker, personal tracker, senior tracker.
- No Activation fee NO Contract NO Credit Check.
- Our service will work within the United States in partnership with T-Mobile Network. Roaming is not supported in our plans.
- Control any plug in device from anywhere and keep an eye on your device's energy usage using the Geeni app (iOS 8 or higher/Android 4.1 or higher)
- No hub required, Wi-Fi built-in
- Set your schedule and automatically tailor your plugged in devices to perfectly fit your life
- Save money, energy and the environment
- Voice control with Amazon Alexa & Google assistant
- Powerful function :pedometer, distance, calorimetric measurement, heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, sleep monitoring, SMS and content alerts, alarm settings, incoming calls alert, caller ID display, application messages alert, find your phone, anti lost, reminder of exercise goal.
- Methods: scan the QR code on the manual or download "Wearfit" in APP store. Please make sure your phone Bluetooth function was turned on. Open "Wearfit", click the selection of link to bracelet, find the device name in the list and click it. Then enter the main interface. The "wearfit" app is compatible with Bluetooth 4 and above smart phones, iOS version 8 above, or Android version 4.4 above.
- To measure heart rate, blood pressure and oxygen, it need to wait for 1-2 minutes. The measurements are for reference only, as it's not a medical device after all.
- The bracelet is made of special silicone, comfortable for wearing, suitable for 5.5-8 inch various sizes of wrist. 80mA lithium battery, charging 1.5 hours about 5 days of standby time.
- Waterproof: waterproof grade IP67, can effectively prevent the rainwater, sweat, and prevent dust.