Doppler Effect Abstract1970-01-01T00:00:00+00:00Doppler Effect: this animation shows how the apparent increase in frequency observed in waves emitted from an approaching source (or conversely a decrease in frequency in waves emitted from a receding source) happens. This effect can be noticed in soun...PT24Shttps://d38zjy0x98992m.cloudfront.net/dcc6b715-5f42-4963-bc63-7beeb1d8c7c2/DOPPLER_ABSTRACT_UHD_265_xlarge.jpghttps://d38zjy0x98992m.cloudfront.net/dcc6b715-5f42-4963-bc63-7beeb1d8c7c2/DOPPLER_ABSTRACT_UHD_265_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/physics/-/medias/dcc6b715-5f42-4963-bc63-7beeb1d8c7c2/pricehttps://www.scientific.pictures/-/galleries/physics/-/medias/dcc6b715-5f42-4963-bc63-7beeb1d8c7c2/price
Highly simplified diesel 4-stroke diesel engine cycling through the intake, compression, power and exhaust strokes.
1. INTAKE STROKE: the piston moves down and the air enters the cylinder. This is illustrated as a pale green cone of air that vanishes into the green inlet tube. Notice how the cylinder fills with this air.
2. COMPRESSION STROKE: the piston moves up and greatly compresses the air. Diesel fuel is injected at this point directly into the heated compressed air. This is illustrated as a rotating purple spiral at the top of the engine. The compressed mixture explodes.
3. POWER STROKE: this explosion drives the piston downwards in what is called the power stroke.
4. EXHAUST STROKE: the piston returns to the top of the cylinder in the exhaust stroke and drives the exhaust gases out of the engine. The exhaust gases can be seen leaving the (orange-yellow) exhaust tube as a cone of pale orange.
The reciprocating (back and forth) engine explodes the mixture (of diesel fuel + air) in a cylinder that forces the contained piston to move. This movement of the piston is transmitted (via the connecting rod) to a rotating device (crankshaft shown as a simple red disc) which is ultimately connected to the wheels (via gears, usually). The diesel engine is similar to the 4-stroke petrol engine but it uses the heat generated by the compression of air to ignite the explosion. To do this it compresses the air more than a petrol engine. The diesel engine therefore does not require a sparking plug. The diesel fuel (which is heavier and contains longer chain hydrocarbons) is injected directly into the cylinder when the air has been greatly heated by the compression stroke.
Animation ID: DIESEL-ENGINE-FHD-animation-Russell-Kightley
copyright Russell Kightley
Animation resolution: 1920x1080 pixels @ 30.0 fps, ~3.0 Mbits/s
Animation keywords: 4 stroke, animation, diesel, engine, four stroke, fuel, internal combustion engine
DIESEL ENGINE2020-08-17T08:09:57ZHighly simplified diesel 4-stroke diesel engine cycling through the intake, compression, power and exhaust strokes. 1. INTAKE STROKE: the piston moves down and the air enters the cylinder. This is illustrated as a pale green cone of air that vanishe...PT16Shttps://d3e1m60ptf1oym.cloudfront.net/262cd586-02b2-406e-a82a-e5fd6f73fe03/DIESEL-ENGINE-FHD-animation-Russell-Kightley_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/262cd586-02b2-406e-a82a-e5fd6f73fe03/DIESEL-ENGINE-FHD-animation-Russell-Kightley_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/physics/-/medias/262cd586-02b2-406e-a82a-e5fd6f73fe03/pricehttps://www.scientific.pictures/-/galleries/physics/-/medias/262cd586-02b2-406e-a82a-e5fd6f73fe03/price
Convection Currents1970-01-01T00:00:00+00:00CONVECTION: heat is distributed in a fluid by convection. As the fluid near the heat source warms up it expands, gets less dense, and rises. The rising fluid is replaced by cooler fluid, which in turn warms and rises. As the rising warm fluid moves awa...PT8Shttps://d3e1m60ptf1oym.cloudfront.net/c9e83877-a6cd-4218-9cc2-c4bcfd992375/convection-double-current-animation-FHD-Russell-Kightley_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/c9e83877-a6cd-4218-9cc2-c4bcfd992375/convection-double-current-animation-FHD-Russell-Kightley_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/physics/-/medias/c9e83877-a6cd-4218-9cc2-c4bcfd992375/pricehttps://www.scientific.pictures/-/galleries/physics/-/medias/c9e83877-a6cd-4218-9cc2-c4bcfd992375/price