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First off, here is a CD burner literally. After a second or so sparks appear and shortly after flames after which it is wise to turn off to avoid magnetron damage in view of the lack of loading.
Aerogel is typically The resulting silica dioxide structure is sponge like with microporosity on a nanometer scale. It was discovered in the 's but came into the public eye with aerospace uses including Mars Rover insulation and as a comet dust collector with Stardust 2. It can support times its own weight.
This photo does not really show how clear it actually is. Basically two aluminium electrodes in a sodium bicarbonate solution will glow and sparkle with sufficient applied voltage. One electrode is aluminium foil and the other is an aluminium bar.
Here's my take on what is happening. If you insert an aluminium electrode in a solution then it will form an oxide layer and when the metal is positive will block current flow.
This, as I understand, is the basis for electrolytic capacitors and the reason they are polarized. Here we have two aluminium electrodes which is the equivalent of back to back electrolytics which are then non-polarized.
Initially there is a lot of current flow e. After a few minutes there is little flow even at VAC. Exceed this however and things start to happen fast.
I interpret this as breakdown of the oxide layer with voltage. There is a diffuse glow starting at about 60 VAC but the sparkling becomes more prominent with increasing voltage. Note that the alkali solution boils rapidly with the heat.
Eye protection is very important here. Spooky Cornstarch Inspired by a recent video I decided to do make my own cornstarch fun. Corn flour in Australia. Essentially cornstarch liquid is a fluid whose viscosity is rate dependent. You can hit it hard with a spoon and it will strike it and bounce off, but can be spooned slowly and drip from a spoon.
A real anti splash fluid. On a flat plate under vibration the vibration is probably more marked at discontinuities and edges like a wave breaks at the seashore. This leads to bizarre effects with cornstarch which gets forced up into stalagmites, loops and bizarre writhing spooky shapes like pools of writhing undead Anyway it is very easy to do.
This is a common cooking ingredient. Get a small loudspeaker I used 4 inch, 4 ohm, 3. I guess the speaker can still be in its enclosure.
Use a 6 VAC transformer or winding with a dropping resistor of 8 - 10 ohm 5 watt, or use a variac. Even use the other speaker of a stereo pair as a dropping resistor. I needed about 2. Place some plastic cling film Gladwrap in Australia loosely over the speaker so that a spoonful or two of the cornstarch mix will sit closely applied to the speaker cone.
I did try a frequency generator and different frequencies but 50 Hz seems fine, particularly as it dries a little and the viscosity rises. I tried this with a subwoofer and the results were a bit disappointing initially.
The right photo shows only limited extension of the corn flour. Removing the plastic had little effect until I got out the frequency generator and a W audio amp and picked out the resonant frequency of about 22 Hz where cone excursion was greatest and up to one inch.
The center photo shows a shot at 25Hz where the corn flour lumps get thrown around. The right photo shows a close-up of one of the airborne lumps. Here I was pouring it out with a spoon. The pour is falling but nowhere near as fast as it should. Zamboni battery sort of I have been keeping an eye out for suitable materials to make a Zamboni battery for some time now.The Pacific Ring of Fire is the boundaries of the Pacific plate where we can see many active volcanoes.
The Pacific plate is the largest tectonic plate on Earth. Almost oceanic plate, it is subducted underneath large and small continental plates that surround it. See also: Articles Referenced in the FAQ of the Rings “I am not now at all sure that the tendency to treat the whole thing as a kind of vast game is really good.
It is, I suppose, a tribute to the curious effect that story has that so many should clamour for sheer ‘information’ or ‘lore’.”. Recent Additions. Essay on Man by Alexander Pope. EPISTLE III: Of the Nature and State of Man, With Respect to Society ARGUMENT.
I. The whole Universe one system of Society. Find the girl who is the “one.” Check. Ask her father for her hand in marriage. Check. Plan the perfect proposal. Check. Buy engagement ring. Hmmmm.. Buying an engagement ring can be an overwhelming task.
“The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. In a 40, km (25, mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.
The Ring of Fire has volcanoes and is home to over 75% of the world's active and dormant volcanoes. It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.
It is sometimes called the circum-Pacific .