Mercury mirror

Another interesting extension of the FECO teclmique, using a capillary droplet of mercury as the second mirror, was developed by Flom etal [6f]. The light from this special interferometer is analysed in reflection. 

It is a colourless gas which decomposes on heating above 420 K to give metallic tin, often deposited as a mirror, and hydrogen. It is a reducing agent and will reduce silver ions to silver and mercury(II) ions to mercury. SnSn bonding is unknown in hydrides but does exist in alkyl and aryl compounds, for example (CH3)3Sn-Sn(CH3)3. 

Mercury. Upon heating a mixture of the compound with soda lime in a long test-tube, a bright metallic mirror and, finally, drops of mercury will form in the upper part of the tube if mercury is present. 

Other Uses. Other uses of mercury that have been discontinued include coatings for mirrors, manufacture of certain types of glass, treatment of felt, and as a fungicide in paper. 

Sulfamic acid and its salts retard the precipitation of barium sulfate and prevent precipitation of silver and mercury salts by alkah. It has been suggested that salts of the type AgNHSO K [15293-60 ] form with elemental metals or salts of mercury, gold, and silver (19). Upon heating such solutions, the metal deposits slowly ia mirror form on the wall of a glass container. Studies of chemical and electrochemical behavior of various metals ia sulfamic acid solutions are described ia Reference 20. 

R = recorder, I = integrator, E = detector, Pr = sample (TLC plate), S = mirror, M = monochromator, L = lamps (incandescent lamp , deuterium lamp 0 and mercury lamp G), FI = cutoff filter. 

Bonilla et al. (1965) studied the effect of parallel scratches on a polished stainless steel plate when boiling mercury with a small portion of sodium as wetting agent. The mirror-finished stainless steel plate was scored by a tempered steel nee-... 

Photolysis of acetone forms methyl radicals, isolated as dimethyl-mercury, and acetyl radicals isolated as diacetyl. Photolysis of benzo-phenone forms phenyl radicals which remove a tellurium mirror to give diphenyltellurium. 

When either diacetyl of dibenzoyl peroxide is decomposed in benzene in the presence of metallic mercury an organomercuric salt is obtained.117 The reaction is similar to the mirror removing reaction observed in gas phase experiments. 

Thermometer periscope. In front of the thermometer, this periscope lets you read a small magnified section of the thermometer scale. By turning the small knob at the lower right of this assembly, you track the movement of the mercury thread, and an image of the thread and temperature scale appear in a stationary mirror just above the sample viewing area. 

When the first crystals just start to melt, record the temperature. When the last crystal just disappears, record the temperature. If both points appear to be the same, either the sample is extremely pure, or the temperature rise was too fast. If you record the temperature with the horizontal index line in the mirror matched to the lines etched on both sides of the periscope window and the top of the mercury thread at the same time, you ll be looking at the thermometer scale head on. This will give you the smallest error in reading the temperature (Fig. 38). 

Excitation spectra of D API and Hoechst 3 3 342 are too short for most of the lasers and mirrors that are supplied with commercially available laser scanning microscopes, although these dyes can be imaged in conventional fluorescence microscopes with Xenon or Mercury arc discharge lamp or when using HeNe laser/UV system or multiple photon microscopy... 

Mercury is the alchemical symbol for consciousness because the metal mercury, quicksilver, is used to coat glass to make mirrors. The mirror, in both Eastern and Western traditions, is often used as a metaphor for the inherently pure and transparent nature of mind, pure awareness, the light of Primordial Consciousness. It is in the mirror of human consciousness that God beholds God. 

Let me conclude this chapter with one more remark. When a man looks into a mirror, he sees therein reflected an image of himself. If, however, he try to touch it, he will find that it is not palpable, and that he has laid his hand upon the mirror only. In the same way, the spirit which must be evolved from this Matter is visible, but not palpable. This spirit is the root of the life of our bodies, and the Mercury of the Philosophers, from which is prepared the liquid water of our Art - the water which must once more receive a material form, and be rectified by means of certain purifying agents into the most perfect Medicine. For we begin with a firm and palpable body, which subsequently becomes a volatile spirit, and a golden water, without any conversion, from which our Sages derive their principle of life. Ultimately we obtain the indestructible medicine of human and metallic bodies,... 

Another common use is as a liquid contact in electrical silent switches. Also, mercury-vapor produces the bluish-white light of streedights. However, mercury-vapor hghts now are being replaced by sodium-vapor lights that produce a yellowish-white hght. Mercury is used in thermometers and barometers, to coat mirrors, and in the electronics industry and several other industries. 

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