Shared Knowledge/Projects/Wikiexperiments

Wikiexperiments (Викиексперименти) is a project by Shared Knowledge aimed at recording high-quality videos of systematically selected experiments for the purposes of illustrating important scientific concepts and phenomena in various sciences. This is an ongoing project that started in September 2015.

Physics videos from the Institute of Physics, Skopje

In December 2015 Shared Knowledge uploaded the first round of high-definition videos of experiments conducted to demonstrate various laws and principles of physics. These 25 demonstrations were performed by Prof. Oliver Zajkov at the Physics Institute at the Ss. Cyril and Methodius University of Skopje, as part of a WikiExperiments project by Shared Knowledge.

The experiments are described in Macedonian and English, and added to articles on the Macedonian and English Wikipedia. Some of them also found their way in other language editions too.

The Second of the two rounds of of experiments are currently being recorded.

Physics gallery

These are the videos of the physics experiments uploaded to Wikimedia Commons. They are described in Macedonian and English, but we would dearly appreciate if the descriptions can be translated in as many languages as possible and placed in their relevant articles on various Wikipedias. The thumbnail descriptions below each video here are short, and merely give an idea about their meaning. Each has a detailed description on its file page.

Note: Clicking on each description under the thumbnail will lead you to the file page with proper full description of the video.

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  Suspended weight showing inertia.

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  "Pistol Test Tube" experiment

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  Reaction force of the Arhimedes's law

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  Galileo's Ball

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  Floating and sinking test tube

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  Glass funnel vacuum action

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  Paper sticking in differential pressure

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  Angular kinetic energy paper roll

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  Viscosity of liquids

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  Evaporation cooling with ethanol

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  Temperature-pressure dependence in boiling

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  Glow discharge in low-pressure tube

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  Electrostatic induction

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  Electric field force lines

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  Demonstration of Ohm's law

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  Magnetic field force lines

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  Ørsted's law with compass needle and wire

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  Ampère's force law

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  Lenz's law with electromagnet

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  Waltenhofen’s pendulum for eddy current

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  Lenz's law with bar magnet and two rings

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  Tesla coil wirelessly lighting a neon tube

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  Acoustic resonance with tuning forks

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  Light radiation pressure with Crookes radiometer

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  Moment of inertia with rotating chair

Translation to other languages

Shared Knowledge would be very grateful to the wider Wikimedia community if the descriptions of these scientific videos can be translated from English to as many languages as possible and inserted into the relevant articles on those Wikipedias.

№	Article	en	az	ba	be	be -t	bs	bg	crh	cs	de	el	eo	et	hr	hu	hy	ka	kk	lt	lv	mk	mt	myv	pl	ro	ru	sh	sk	sl	sq	sr	tr	tt	uk	Σ	Wikidata	st.
1	inertia	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	+	+	-	+	+	-	-	+	+	+	+	+	+	+	+	+	-	+	27	Q122508	2
2	vapor pressure	+	-	-	+	-	-	+	-	-	+	+	+	+	-	+	+	-	-	-	-	+	-	-	+	+	+	+	-	+	-	+	-	-	+	17	Q2661322	3
3	Archimedes (287 BCE-212 BCE)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	33	Q8739	21	+
4	buoyancy	+	+	-	+	-	+	+	-	+	+	+	-	+	+	+	-	-	-	-	-	-	-	-	+	+	+	+	-	+	-	+	+	-	+	19	Q6497624	5	+
5	Galileo Galilei (1564-1642)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	33	Q307	41	+
6	suction	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	-	-	-	-	-	-	+	5	Q1790295	0
7	Bernoulli's principle	+	+	-	-	-	+	+	-	+	+	+	-	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	24	Q181328	8	+
8	rotational energy	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	-	-	-	-	-	-	-	4	Q2140940	3
9	Magnus effect	+	-	-	+	+	-	+	-	+	+	+	-	-	-	+	-	-	+	-	+	-	-	-	+	+	+	-	+	-	-	+	+	-	+	17	Q622975	4	+
10	viscosity	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	-	+	+	-	+	27	Q128709	5	+
11	evaporation	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	-	-	+	25	Q132814	4	+
12	boiling point	+	-	-	+	+	+	+	-	+	+	+	+	+	+	+	-	+	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	26	Q1003183	5	+
13	cathode ray	+	-	-	-	-	-	+	-	+	+	-	-	+	+	+	-	-	-	-	-	-	-	-	-	+	+	+	-	+	-	+	+	-	+	14	Q207340	2
14	electric glow discharge	+	-	-	-	-	-	+	-	+	+	-	-	+	-	-	-	-	+	-	+	-	-	-	+	-	+	-	-	-	-	-	-	+	+	11	Q1427934	3	+
15	electroscope	+	-	-	+	+	-	-	-	+	+	-	-	+	+	-	-	-	+	+	-	+	-	-	+	-	+	+	-	+	-	+	+	+	+	18	Q130962	2	+
16	electrostatic induction	+	+	-	-	-	-	+	-	+	+	-	-	+	+	-	-	-	+	-	-	+	-	-	+	-	+	-	-	-	-	+	+	-	+	14	Q841249	1	+
17	electric field	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	30	Q46221	2	+
18	Ohm's law	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	28	Q41591	6	+
19	field line	+	-	-	-	-	-	+	-	-	+	-	+	+	+	-	+	-	+	-	-	-	-	-	-	-	+	-	-	-	-	+	-	-	+	11	Q1810738	2	+
20	Oersted's law	+	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	+	-	+	-	-	-	-	-	-	-	-	5	Q3733130	5	+
21	Ampère's force law	+	+	-	+	-	-	-	-	+	+	-	+	+	-	-	+	-	-	-	+	+	-	-	+	-	+	-	-	-	-	-	-	+	+	14	Q2359410	5
22	Lenz's law	+	-	-	+	-	-	+	-	+	+	+	+	+	+	+	+	+	-	-	-	+	-	-	+	+	+	+	+	+	-	+	+	-	+	22	Q192288	2	+
23	eddy current	+	-	-	-	-	-	+	-	+	+	-	+	+	+	+	+	-	-	-	+	+	-	-	+	+	+	-	+	-	-	+	+	-	+	18	Q208598	2	+
24	alternating current	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	27	Q124164	5	+
25	Tesla coil	+	+	-	-	-	-	-	-	+	+	+	+	+	+	+	-	-	-	-	-	-	-	-	+	+	+	+	-	-	-	+	+	-	+	16	Q622424	4	+
26	Nikola Tesla (1856-1943)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	31	Q9036	40	+
27	sound	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	-	+	30	Q11461	8	+
28	resonance	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	-	+	-	+	+	+	+	+	-	+	-	+	+	-	+	27	Q172858	2	+
29	acoustic resonance	+	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	+	-	-	+	-	-	-	-	-	-	-	+	-	+	7	Q2558427	2
30	Crookes radiometer	+	-	-	-	-	-	-	-	+	+	-	+	-	-	-	-	-	-	-	-	-	-	-	+	-	+	-	+	-	-	-	-	-	+	8	Q1334758	5	+
31	moment of inertia	+	-	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	-	+	-	-	+	+	+	+	+	+	+	+	+	+	+	28	Q165618	8	+
Σ	→ Autolist→ gallery→ timeline	31	16	4	19	11	15	23	0	27	29	19	20	27	24	21	18	10	19	14	16	21	2	4	27	21	30	20	17	19	8	24	22	9	29	616	avg: 20\18\58%	207

Chemistry videos from the Institute of Chemistry, Skopje

In June 2016 Shared Knowledge uploaded the first round of high-definition videos of experiments conducted to demonstrate various reactions in chemistry. These 20 demonstrations and experiments were performed by Prof. Vladimir Petruševski at the Institute of Chemistry at the Ss. Cyril and Methodius University of Skopje, as part of a WikiExperiments project by Shared Knowledge.

The experiments are described in Macedonian and English, and added to articles on the Macedonian and English Wikipedia. Some of them also found their way in other language editions too.

Chemistry gallery

These are the videos of the chemistry experiments uploaded to Wikimedia Commons. They are described in Macedonian and English, but we would dearly appreciate if the descriptions can be translated in as many languages as possible and placed in their relevant articles on various Wikipedias. The thumbnail descriptions below each video here are short, and merely give an idea about their meaning. Each has a detailed description on its file page.

Note: Clicking on each description under the thumbnail will lead you to the file page with proper full description of the video.

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  Direct synthesis of aluminum bromide

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  Reaction of the product Al2Br6 with water

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  Burning of sulfur in oxygen

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  Preparation of amorphous silicon and magnesium silicide

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  Magnesium silicide is added to 10% hydrochloric acid

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  Direct synthesis of aluminum iodide

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  Dehydration properties of concentrated sulfuric acid

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  Direct synthesis of ammonium chloride

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  Slaking of quicklime as a strongly exoenergetic reaction

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  Oxidation of a piece of charcoal in molten potassium nitrate

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  Synthesis of a basic oxide

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  Disproportionation reaction

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  Catalytic decomposition of hydrogen peroxide

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  'Elephant toothpaste'

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  Large amount of energy released upon combustion of ethanol

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  Reaction between a strong oxidizing and a reducing agent

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  Explosive properties of three different explosives

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  Leidenfrost effect

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  Explosion of a hydrogen–air mixture

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  Phenomenon of discontinuous thermochromism

Translation to other languages

Shared Knowledge would be very grateful to the wider Wikimedia community if the descriptions of these scientific videos can be translated from English to as many languages as possible and inserted into the relevant articles on those Wikipedias.

№	Article	en	az	ba	be	be -t	bs	bg	crh	cs	de	el	eo	et	hr	hu	hy	ka	kk	lt	lv	mk	mt	myv	pl	ro	ru	sh	sk	sl	sq	sr	tr	tt	uk	Σ	Wikidata	st.
1	aluminum bromide	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	+	+	+	-	-	+	+	-	-	9	Q259311	7	+
2	sulfur trioxide	+	+	-	-	-	+	+	-	+	+	+	+	+	+	+	-	+	-	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	24	Q242715	13	+
3	Magnesium silicide	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	+	-	-	-	6	Q421028	6	+
4	aluminum iodide	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	+	+	-	-	+	-	-	-	7	Q159096	6	+
5	sulfuric acid	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	30	Q4118	23	+
6	ammonium chloride	+	-	-	-	-	+	+	-	+	+	+	+	+	+	+	+	+	-	-	+	-	-	-	+	+	+	+	+	+	-	+	+	-	+	22	Q188543	23	+
7	calcium oxide	+	+	-	-	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	-	-	-	+	+	+	+	+	+	-	+	+	-	+	24	Q185006	18	+
8	potassium nitrate	+	-	-	-	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	-	-	-	+	+	+	+	+	+	-	+	+	-	+	23	Q177836	16	+
9	Half-reaction	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	+	-	-	-	4	Q2272343	1
10	ammonium dichromate	+	-	-	-	-	-	+	-	+	+	-	+	+	-	+	+	-	-	-	+	-	-	-	+	-	+	+	+	+	-	+	-	-	-	15	Q422430	8	+
11	chemical decomposition	+	-	-	-	-	-	+	-	+	+	+	-	+	-	+	-	-	-	-	-	-	-	-	+	+	+	+	-	-	+	+	-	-	+	14	Q192036	4	+
12	elephant toothpaste	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	-	-	-	-	-	-	+	3	Q5359401	5	+
13	combustion	+	+	-	+	-	+	+	-	+	+	+	+	+	+	-	+	+	-	+	+	-	-	-	+	+	+	+	+	+	+	+	+	-	+	25	Q133235	5	+
14	redox	+	-	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	29	Q82682	3	+
15	explosive material	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	29	Q12870	7	+
16	Leidenfrost effect	+	-	-	-	-	-	-	-	+	+	+	+	-	+	+	-	-	-	-	-	-	-	-	+	-	+	-	-	+	-	+	+	-	+	13	Q654136	2	+
17	hydrogen	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	33	Q556	30	+
18	Thermochromism	+	-	-	-	-	-	-	-	-	+	+	+	-	-	-	-	-	-	-	-	+	-	-	-	-	+	-	+	+	-	-	-	-	+	9	Q899581	1	+
Σ	→ Autolist→ gallery	18	6	2	5	4	9	11	0	15	16	12	12	11	10	11	9	7	6	8	10	6	1	1	13	10	18	15	13	12	5	16	11	3	13	319	avg: 18\9\52%	178

External links

Wikimedia Commons has media related to: Category:Wikiexperiments