LORD RAYLEIGH states in NATURE of April 20 that Dewar's assistant, Lennox, made the first vacuum flask. As one of the few survivors directly concerned with the production of the vacuum flask from its inception, I wish to place on record the facts as I know them....
Institution. I should recognize them without doubt. It is likely that Muller was the first to make such vessels outside the Royal Institution, but I do not think that he had arrived in London when Lennox first made them. I was in the habit of frequenting his shop as soon as I learnt ...
a试验目的:本试验大纲适用于用DL2500GFJ1箱式柴油发电机组,检测其性能是否满足《DL2500GFJ1型箱式柴油发电机组技术协议》 Experimental goal: This test outline is suitable in using the DL2500GFJ1 box-type diesel oil power set, examines its performance whether satisfies "DL2500GFJ1 Flask Type Diesel ...
From the ancient Romans, through the Middle Ages, to the late of the nineteenth century, the Aristotelian doctrine of spontaneous generation was one of the most basic laws. Even the invention of the microscope and investigations of Leeuwenhoek and Hook d
acondenser (4.6) on the flask and adjust the heating device (4.7) so that when a Soxhlet-type extractor (4.4.1) is used the extraction liquid syphons several times per hour. For the number of syphons and the extraction time see Table 1. 正在翻译,请等待... ...
This final attenuation procedure consisted of suspending the spinal cord of a rabid rabbit in a flask, in a warm dry atmosphere, to achieve slow desiccation. They succeeded in producing “attenuated viruses of different strengths,” the weakest of which could be used to prepare the first dose ...
Halley has shown that it only takes a little creativity to make a picnic gourmet. Well, creativity and a Thermos flask. “Using my trusty friend, I’ve had tortellini in brodo, piping-hot noodles, braised meats of all kinds, curry, balls of ice cream and ice-cold gin martinis at the ...
This set of equipment quite are reasonable in the design structure, establishes the thermal flask in the sterilization pot rear end crown, the such full use stowage space, also the operation, the maintenance is simple, is convenient.[translate] ...
pyzo 4.10.2 → 4.11.0 (the Python IDE for scientific computing) qtconsole 4.7.5 → 4.7.7 (Jupyter Qt console) quart 0.13.0 → 0.13.1 (A Python ASGI web microframework with the same API as Flask) rasterio 1.1.5 → 1.1.8 (Fast and direct raster I/O for use with Numpy and Sci...
A qinghua porcelain flask from the Yuan Dynasty is on show at Poly Art Museum in Beijing. CHINA DAILY Qinghua (blue-and-white) porcelain is among the brightest jewels of Chinese artwork. Discerning collectors view it as a lifetime goal to own examples of the fine, centuries-old pottery, wh...