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.

• Play media

  Suspended weight showing inertia.

• Play media

  "Pistol Test Tube" experiment

• Play media

  Reaction force of the Arhimedes's law

• Play media

  Galileo's Ball

• Play media

  Floating and sinking test tube

• Play media

  Glass funnel vacuum action

• Play media

  Paper sticking in differential pressure

• Play media

  Angular kinetic energy paper roll

• Play media

  Viscosity of liquids

• Play media

  Evaporation cooling with ethanol

• Play media

  Temperature-pressure dependence in boiling

• Play media

  Glow discharge in low-pressure tube

• Play media

  Electrostatic induction

• Play media

  Electric field force lines

• Play media

  Demonstration of Ohm's law

• Play media

  Magnetic field force lines

• Play media

  Ørsted's law with compass needle and wire

• Play media

  Ampère's force law

• Play media

  Lenz's law with electromagnet

• Play media

  Waltenhofen’s pendulum for eddy current

• Play media

  Lenz's law with bar magnet and two rings

• Play media

  Tesla coil wirelessly lighting a neon tube

• Play media

  Acoustic resonance with tuning forks

• Play media

  Light radiation pressure with Crookes radiometer

• Play media

  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	5
3	Archimedes (287 BCE-212 BCE)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	33	Q8739	22	+
4	buoyancy	+	+	-	+	-	+	+	-	+	+	+	-	+	+	+	-	-	-	-	-	-	-	-	+	+	+	+	-	+	-	+	+	-	+	19	Q6497624	5	+
5	Galileo Galilei (1564-1642)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	33	Q307	44	+
6	suction	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	-	-	-	-	-	-	+	5	Q1790295	1	+
7	Bernoulli's principle	+	+	-	-	-	+	+	-	+	+	+	-	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	24	Q181328	8	+
8	rotational energy	+	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	-	-	-	-	-	-	-	-	4	Q2140940	3
9	Magnus effect	+	-	-	+	+	-	+	-	+	+	+	-	-	-	+	-	-	+	-	+	-	-	-	+	+	+	-	+	-	-	+	+	-	+	17	Q622975	4	+
10	viscosity	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	-	+	+	-	+	27	Q128709	7	+
11	evaporation	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	-	-	+	25	Q132814	5	+
12	boiling point	+	-	-	+	+	+	+	-	+	+	+	+	+	+	+	-	+	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	26	Q1003183	6	+
13	cathode ray	+	-	-	-	-	-	+	-	+	+	-	-	+	+	+	-	-	-	-	-	-	-	-	-	+	+	+	-	+	-	+	+	-	+	14	Q207340	2
14	electric glow discharge	+	-	-	-	-	-	+	-	+	+	-	-	+	-	-	-	-	+	-	+	-	-	-	+	-	+	-	-	-	-	-	+	+	+	12	Q1427934	3	+
15	electroscope	+	-	-	+	+	-	-	-	+	+	-	-	+	+	-	-	-	+	+	-	+	-	-	+	-	+	+	-	+	-	+	+	+	+	18	Q130962	2	+
16	electrostatic induction	+	+	-	-	-	-	+	-	+	+	-	-	+	+	-	-	-	+	-	-	+	-	-	+	-	+	+	-	-	-	+	+	-	+	15	Q841249	1	+
17	electric field	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	30	Q46221	3	+
18	Ohm's law	+	+	-	+	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	28	Q41591	6	+
19	field line	+	-	-	-	-	-	+	-	-	+	-	+	+	+	-	+	-	+	-	-	-	-	-	-	-	+	+	-	-	-	+	-	-	+	12	Q1810738	2	+
20	Oersted's law	+	-	-	-	-	-	-	-	-	-	-	-	+	+	+	-	-	-	-	-	-	-	-	+	-	+	-	-	-	-	-	-	-	-	6	Q3733130	5	+
21	Ampère's force law	+	+	-	+	-	-	-	-	+	+	-	+	+	-	-	+	-	-	-	+	+	-	-	+	-	+	-	-	-	-	-	-	+	+	14	Q2359410	5
22	Lenz's law	+	-	-	+	-	-	+	-	+	+	+	+	+	+	+	+	+	-	-	-	+	-	-	+	+	+	+	+	+	-	+	+	-	+	22	Q192288	2	+
23	eddy current	+	-	-	-	-	-	+	-	+	+	-	+	+	+	+	+	-	-	-	+	+	-	-	+	+	+	+	+	-	-	+	+	-	+	19	Q208598	2	+
24	alternating current	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	+	-	-	+	+	+	+	+	+	-	+	+	-	+	27	Q124164	5	+
25	Tesla coil	+	+	-	-	-	-	-	-	+	+	+	+	+	+	+	-	-	-	-	-	-	-	-	+	+	+	+	-	-	-	+	+	-	+	16	Q622424	4	+
26	Nikola Tesla (1856-1943)	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	-	+	+	+	+	+	+	+	+	+	+	+	31	Q9036	40	+
27	sound	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	-	+	31	Q11461	8	+
28	resonance	+	+	-	+	+	+	+	-	+	+	+	+	+	+	+	+	+	+	+	-	+	-	+	+	+	+	+	-	+	-	+	+	-	+	27	Q172858	2	+
29	acoustic resonance	+	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	-	-	-	+	-	-	+	-	-	+	-	-	-	-	+	-	+	8	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	22	18	10	19	14	16	21	2	5	27	21	30	24	17	19	8	24	23	9	29	623	avg: 20\18\59%	219

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.

• Play media

  Direct synthesis of aluminum bromide

• Play media

  Reaction of the product Al2Br6 with water

• Play media

  Burning of sulfur in oxygen

• Play media

  Preparation of amorphous silicon and magnesium silicide

• Play media

  Magnesium silicide is added to 10% hydrochloric acid

• Play media

  Direct synthesis of aluminum iodide

• Play media

  Dehydration properties of concentrated sulfuric acid

• Play media

  Direct synthesis of ammonium chloride

• Play media

  Slaking of quicklime as a strongly exoenergetic reaction

• Play media

  Oxidation of a piece of charcoal in molten potassium nitrate

• Play media

  Synthesis of a basic oxide

• Play media

  Disproportionation reaction

• Play media

  Catalytic decomposition of hydrogen peroxide

• Play media

  'Elephant toothpaste'

• Play media

  Large amount of energy released upon combustion of ethanol

• Play media

  Reaction between a strong oxidizing and a reducing agent

• Play media

  Explosive properties of three different explosives

• Play media

  Leidenfrost effect

• Play media

  Explosion of a hydrogen–air mixture

• Play media

  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	17	+
8	potassium nitrate	+	-	-	-	-	+	+	-	+	+	+	+	+	+	+	+	-	+	+	+	-	-	-	+	+	+	+	+	+	-	+	+	-	+	23	Q177836	15	+
9	Half-reaction	+	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	+	+	-	-	-	+	-	-	-	4	Q2272343	1
10	ammonium dichromate	+	-	-	-	-	-	+	-	+	+	-	+	+	-	+	+	-	-	-	+	-	-	-	+	-	+	+	+	+	-	+	-	-	-	15	Q422430	11	+
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	8	+
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%	180

External links

Wikimedia Commons has media related to: Category:Wikiexperiments