- Видео 179
- Просмотров 670 793
matematik och naturvetenskap
Добавлен 31 июл 2012
Newtons Cradle
Newton's Cradle, conservation of momentum.
Newtons vagga, rörelsemängdens bevarande.
Rörelsemängd klassisk fysik p=mv, relativistisk rörelsemängd p=γmv.
Newtons vagga, rörelsemängdens bevarande.
Rörelsemängd klassisk fysik p=mv, relativistisk rörelsemängd p=γmv.
Просмотров: 31
Видео
Diffraction
Просмотров 162 месяца назад
The film shows what happens when light from a laser passes through a single slit. The pattern formed on the wall is due to diffraction exhibited by waves. The experiment demonstrates that light has wave properties. If you want to read more about light and its duality, download the book Physics 9 from Apple Books.
Refraction of light
Просмотров 203 месяца назад
The film shows that light is refracted when it encounters another transparent material at an angle other than 90°, the normal. The second material must have a different refractive index; here, water and air are compared. The speed of light in air is approximately 300,000 km/s, and in water, it's 225,000 km/s. The light ray is refracted when it hits the surface of the water. In optically denser ...
Vision and refraction
Просмотров 133 месяца назад
The video shows how light is refracted in the eye's lens. Refractive errors such as myopia and how it is corrected with a concave lens, as well as refractive errors such as hyperopia and how it is corrected with a convex lens. Interested in light, lenses, and refraction of light? Read more in the Physics 9 book in Apple Books
RGB colors
Просмотров 313 месяца назад
With red, green, and blue light, new colors can emerge by mixing the light. RGB differs from colors mixed on paper, which is instead called CMYK, cyan, magenta, yellow, and black. White light contains all colors, therefore colors are clearly visible in white natural light. When I illuminate a green apple with white natural light, the apple appears green. If instead, I only use red light, no lig...
Corrosion of iron
Просмотров 225 месяцев назад
The film shows corrosion of iron over three days. When iron corrodes, it is called rust. The reaction is quite complicated but involves iron combining with oxygen with the help of water-all three ingredients are necessary. Initially, iron forms iron ions through oxidation: 4Fe becomes 4Fe^3 12e-. Oxygen molecules O2 and water H2O are reduced by taking up electrons and forming hydroxide ions OH-...
Base metals in copper ion solution
Просмотров 345 месяцев назад
The video shows what happens when two base metals, aluminum (Al) and zinc (Zn), are placed in a solution of copper sulfate. Since copper is more noble than both zinc and aluminum, the copper ions (Cu2 ) will gain electrons and be reduced to copper metal, while the base metals become metal ions. If you are interested in metals and the electrochemical series, there is more to read in Chemistry 9 ...
Metal salt flame color
Просмотров 565 месяцев назад
The video shows how various metal salts react in an open flame and the color the flame takes on. Explanation of metal salts and their different colors will be included in the updated version of the Chemistry 9 book in Apple Books by Kaj Schmidt. Enjoy, a beautiful experiment that we conduct in 9th grade when I teach about ionic bonds, metals, and none metals.
Electrolysis
Просмотров 705 месяцев назад
Electrolysis of copper sulfate and sodium chloride. More about electrolysis in the e-book Chemistry 9 on Apple Books by Kaj Schmidt.
Indicators
Просмотров 246 месяцев назад
In this video, I show two different indicators. An indicator is a substance that changes color in acidic or basic conditions. There are natural indicators like red cabbage, blueberries, tea, hibiscus, and others. I am investigating red cabbage. Then, there are synthetic indicators like bromothymol blue (BTB) and phenolphthalein. I am investigating BTB. If you want to learn more about indicators...
Acidification
Просмотров 76 месяцев назад
The video shows how sulfur acidifies water when sulfur is burned, forming sulfur oxides that then combine with water in the atmosphere, creating sulfuric acid, which is a strong acid. In the second clip, I use carbon dioxide from exhaled air to acidify the water. Carbonic acid is formed, which is a weak acid. BTB has been used as an indicator; BTB turns yellow in acidic solutions. If you want t...
Properties of water and gasoline
Просмотров 296 месяцев назад
The video shows the difference between a polar liquid like water and a nonpolar liquid like gasoline. I am investigating properties such as surface tension and solubility. The solubility and properties of water are explained in the Chemistry 7 book on Apple Books. The water molecule's intra-molecular bonds are covalent, and inter-molecular bonds between the molecules are hydrogen bonds, as desc...
Properties of alcohols
Просмотров 216 месяцев назад
The film demonstrates the properties of different alcohols. It explores the flammability of various alcohols and the type of flame they produce. It also investigates which alcohols are soluble in water and which are not. The characteristics of alcohols are thoroughly explained in the chemistry book 'kemi 8' on Apple Books, authored by Kaj Schmidt.
Hydrogengas explosive
Просмотров 186 месяцев назад
The video shows how explosive hydrogen, in combination with oxygen, becomes when ignited, a demonstration of a chemical reaction where water vapor is formed, from the Chemistry 9 book in Apple Books by Kaj Schmidt
Sodium in water
Просмотров 336 месяцев назад
A short clip showing how reactive sodium is. A small piece of sodium is dropped into a crystallization dish with water and a few drops of phenolphthalein. The indicator shows that a basic reaction is occurring in the water, and the gas formed is hydrogen. 2Na 2H2O→2NaOH H2. 2 Sodium 2 water → 2 sodiumhydroxide (base) hydrogen gas. More information about why metals in group one react violently c...
Chemical reaction Magnesium and Oxygen
Просмотров 196 месяцев назад
Chemical reaction Magnesium and Oxygen
Static electricty and polarity of the watermolecule
Просмотров 96 месяцев назад
Static electricty and polarity of the watermolecule
Korrosion, järn som rostar kemilaboration.
Просмотров 1817 месяцев назад
Korrosion, järn som rostar kemilaboration.
Likformighet röd kurs matte direkt åk9 kapitel 2 geometri
Просмотров 4978 месяцев назад
Likformighet röd kurs matte direkt åk9 kapitel 2 geometri
Area och volymskala Matte Direkt åk 9
Просмотров 5428 месяцев назад
Area och volymskala Matte Direkt åk 9
Rymddiagonalen Matte Direkt 9 röd kurs
Просмотров 4338 месяцев назад
Rymddiagonalen Matte Direkt 9 röd kurs
Vinklar röd kurs matte direkt åk 9
Просмотров 1,1 тыс.8 месяцев назад
Vinklar röd kurs matte direkt åk 9
konung
tack för att du existerar
bästa du, tack! kan man få fler videos om energi?❤
Fucking broder, nu fattar jag
nu kan ja klara mitt fysik prov, tackar
Hej! Skulle du kunna göra en video om procent och statistik röd kurs åk 9 där det står "mer om statistik" och även sidan där efter "promille och ppm"
Den här mannen var min lärare för 3 år sen, får upp hans videos på min yt ibland. Bra lärare till 100%!
Riktig kung👑
Tack så jättemycket 🙏
jag älskar lara
jävla va dum du är
Tt
Wow Kaj 🔥 🔥
Gillat & delat, hoppas jag vinner 🙏🙏
Men frågan är väl att man ska ta redan på hur mycket Jonas sålt för? Och inte hur mycket han gav till henne. Så svaret bör vara att han sålt för 4800kr eller är det något jag missar?
Det stämmer bra om Johanna har sålt för 1200kr har Jonas sålt för 4*1200kr = 4800kr.
khrtirhegru
Så söt du är!
Riktig banger
0:33 Tack så jättemycket!! kommer få A på mitt prov nu🫶🏻
Stort tack!
bra video innan kemi provet :)
Mycket bra ,
Mycket bra och tydlig labb!
I used to watch this as a kid in Brazil.
tack man, lifesaver.
tackar
kan vi få en part 2 snälla snällasnälal
Tack!
Mycke bra 🤣
Uno-x, som bensinstationen!
ncc
Du har potentiellt räddat mitt prov bror
daddy
ayo??
@@waffel6378 The voices are getting louder by the minute.
@@kiitosmies9464 sure
??????????????????????????????
@@kiitosmies9464 niggh g55 ofr3ogt
Gasen koldioxid är en nyttig gas . Växterna kan suga upp denna gas via bladens klyvöppningar och processen fotosyntes kan förverkligas. Koldioxid kommer även från vulkaner . Det är solen som påverkar jordens medeltemperatur och inte gasen koldioxid. En tidsperiod av mer aktivitet i solen får vår planet att bli varmare.
2:22 - 6:56 kärnkraftsverk
Coolt!
Tack jappe
3:50, timestamp för mig själv lol
Nostalgin is real
Tack så mycket det var jätte snällt av dig fortsätt.👍
Waw
Det var till nytta, tack!
Det här sabbade min dag 100% Inte för att det är något fel med själva videon. Bara att jag är hemma och inte i skolan..
Vill du va i skolan?
tack så mycket det här hjälpte verkligen du är väldigt bra på att förklara👍
Coolt och intressant expriment 😁
5:50 chernobyl var inte så bra på det
Jätte bra, hjälpte mycket med alla exempel😊
Tack det var tre bra förklaringar till att lösa ekvationerna!
Väldigt bra video. :)
Jag löste snabbare än dig