Nirvware ‘Cyberdesk’ Headwear & Wrist Computer - Lisa Krohn (1993)
“Lisa Krohn has really embraced the — probably revolting — idea of the computer as an extension of the body.“ This concept incorporates video camera and sound amplification technology, telecommunications and micro-processing within a single system operated by a mouse worn on the chest, and viewed via retinal scanning. The idea is to "extend” the wearer’s powers of sight, hearing and voice, allowing him or her to make telephone or video calls and providing access to various databases. Composed of a network of electronic parts connected by a fiber-optic grid and set in elastomeric polyurethane mucus, the system would run on nickel metal hydride cells charged by body heat and ambient light via photovoltaic cells. Jurors concurred that technology for such a product may well be feasible in the near future.”
Just a random snapshot from the lab. Performing reactions with sodium hydride as a base.
Sodium hydride is a salt-like hydride, composed of Na+ and H− ions, it is an ionic material that is insoluble in organic solvents. It reacts violently with water and often causing fire. Because of this, NaH is usually sold mixed with mineral oil what keeps away water and protects the hydride from moisture.
Carbazole is a fluorescent itself, but if its salt is prepared it has a quite different emission under UV light. As seen of the picture above at the neck of the flask it has a bright blue flurescence and in the bottle, where the carbazole started to react with the sodium hydride it turned greenish.
Carbazole (the molecule drawn above) could be also named as:
9-azafluorene, dibenzopyrrole, diphenylenimine, diphenyleneimide. Interestingly it was found in tobacco smoke.
Dry ice is the solid form of carbon dioxide that sublimates at −78.5 °C (−109.3 °F) at atmospheric pressure. This extreme cold makes the solid dangerous to handle without protection due to burns caused by freezing (frostbite).
If a fast or quite exothermic reaction is being performed, the really low temperature often helps a lot. It prevents runaway of the reaction and keeps chemistry in the flask. In my case a fluorinated compound was reduced with a complex metal hydride. At room temperature the reduction happens and gives a side product, if it’s cooled with ice or salt-ice bath a maximum 40% yield could be achieved, but if it’s being performed a -78 °C up to 90% product could be isolated on a 200 g scale.
Summary: Based on Piece by Piece Warnings: one swear, abandonment theme
Six years old
Their voices echoed around the house, filled with rage. You were hidden beneath your desk, head between your knees and arms wrapped around yourself. Something crashed and you flinched, pulling your blanket over your head. His words grew louder, fueled by fury. Tears began to slip down your cheeks.
“You just fuck everything up! You-you and that daughter of yours!”
“Since the gifs about the lab going up in green flames got a lot of notes, i thought i’d make a post about Trimethyl borate."
Trimethyl borate, or boron trimethoxide, has formula B(OCH3)3. It is a clear liquid. It melts at −34 °C and boils at 68–69 °C. It decomposes in contact with water. It is flammable and burns with a green flame. It is primarily used as a precursor to boronic esters and boronic acids for Suzuki couplings. Other uses include : Anti-oxidant in Brazing and Solder Flux, Wood preservative, Catalyst of olefin polymerisation, raw material in the production of borophosphosilicate glass film by chemical vapor deposition ,in green fire compositions for special effects (as a solution of boric acid in methanol, where it forms in small amounts) etc…
Trimethyl borate is the main precursor to sodium borohydride by its reaction with sodium hydride:
4 NaH + B(OCH3)3 → NaBH4 + 3 NaOCH3
It is a gaseous anti-oxidant in brazing and solder flux. Otherwise, trimethyl borate has no announced commercial applications. It has been explored as a fire retardant, as well as being examined as an additive to some polymers. It is a useful reagent in organic synthesis, as a precursor to boronic acids, which are used in Suzuki couplings. These boronic acids are prepared via reaction of the trimethyl borate with Grignard reagents followed by hydrolysis:
The violent reaction between sodium hydride and water.
Sodium hydride is a salt-like hydride, composed of Na+ and H− ions, it is an ionic material that is insoluble in organic solvents, but soluble in molten sodium metal and quite often used as a base in chemistry.
When contact with water sodium hydride releases hydrogen, turns into sodium hydroxide and generates a lot heat. Because of this heat the generated hydrogen gas ignites and because of the presence of sodium ions it burns with an intense yellow color (as seen).
NaH(s) + H2O(l) –> NaOH(aq) + H2(g)
Because of this, NaH is usually sold mixed with mineral oil what keeps away water and protects the hydride from moisture. However if it is stored for long time, it should be titrated by measuring the amount of hydrogen generated from the reaction of the hydride and an alcohol.
The USS Sulacois a Conestoga class starship, designed as a troop and logistics transport.
Sulaco masses 78,000 metric tons and can carry an additional 20,000 tons of cargo. It measures 385 meters in
length. As a troop carrier, Sulaco carries two UD4L Cheyenne dropships
and has sufficient life support capabilities for 90 crew and passengers
to be supported indefinitely. The ship is fully
automated and can sustain and defend itself with the use of an advanced
Artificial Intelligence computer. An android accompanies most missions to monitor the computer and life support systems.
It is powered by a Westingland A-59 3.6 terawatt fusion reactor
using high density lithium hydride for fuel. The high density of the
lithium hydride provides the ship with one whole year of power with only
900 cubic meters of fuel. The reactor itself is protected by armor and
in an emergency, the reactor can vent pressure and eject dangerous
liquids safely into space, preventing damage of the ship itself. It has a
regular acceleration of 0.5g [5 m/s²] and can go a maximum acceleration
of one g, but will burn 16 times as much fuel if it operates at this
speed. Sublight propulsion is provided by four GF-2400 rocket motors
using industrial carbon-diamond as reaction mass. Faster-than-light
propulsion is provided by a hyperdrive tachyon shunt, with a maximum
speed of 0.74 light year per sidereal day. The ship is designed to
operate in space only - if it enters an atmosphere with any type of
gravity, it will not be able to sustain any acceleration and crash.
For the Shance Secret Santa! And that this is for the amazing @astrogazers !!!!
They wanted a witch au so I gave them that, making lance a witch. And for shiro to also be a witch but a half hydride of a cat so whenever lance flies on a broom to go out to run errands, or whenever lance is alone shiro turns into a cat so he can be with lance always and watch over him.
Well I hope u like ur gift! And to also hope u have a wonderful holiday!
I attempted a reaction what didn’t worked a year ago.
In this case I tried to convert an amide (that red thing) to an amine with lithium aluminium hydride (LiAlH4), a highly reactive reducing reagent. As seen the color of the reaction mixture changed and it looks like something happened, but unfortunately only a lithium salt formed and I got back the compound what I started from.
I am doing pyrrole chemistry for a while now and there is a quite interesting reaction with this. When I synthesize freshly a pyrrole (with free N-H) and add sodium-hydride, during the formation of the N-Na salt of the pyrrole an intense blue color appears as seen on the picture, but it fades to give a yellowish solution as the gas evolution stops. And it only works if the pyrrole is freshly prepared and it is in a pure form.
The color reminds me to the classic experiment, the solvated electron, what could be done by dissolving a piece of alkali metal in liquid ammonia.