#summerofphysics — Public Fediverse posts

This Altalena Gigante has a rope length L of 3.2m, which increases the duration T of one swing to 3.6 seconds, as T = 2 π √(L/g), with g = 9.81 m/s² (yes, irrespective of mass and amplitude, for small swings! This property was very important for timekeeping, using pendulum clocks). #SummerOfPhysics Acceleration (versnelling) measured with #phyphox app from @phyphox

This Altalena Gigante has a rope length L of 3.2m, which increases the duration T of one swing to 3.6 seconds, as T = 2 π √(L/g), with g = 9.81 m/s² (yes, irrespective of mass and amplitude, for small swings! This property was very important for timekeeping, using pendulum clocks). #SummerOfPhysics Acceleration (versnelling) measured with #phyphox app from @phyphox

This Altalena Gigante has a rope length L of 3.2m, which increases the duration T of one swing to 3.6 seconds, as T = 2 π √(L/g), with g = 9.81 m/s² (yes, irrespective of mass and amplitude, for small swings! This property was very important for timekeeping, using pendulum clocks). #SummerOfPhysics Acceleration (versnelling) measured with #phyphox app from @phyphox

This Altalena Gigante has a rope length L of 3.2m, which increases the duration T of one swing to 3.6 seconds, as T = 2 π √(L/g), with g = 9.81 m/s² (yes, irrespective of mass and amplitude, for small swings! This property was very important for timekeeping, using pendulum clocks). #SummerOfPhysics Acceleration (versnelling) measured with #phyphox app from @phyphox

This Altalena Gigante has a rope length L of 3.2m, which increases the duration T of one swing to 3.6 seconds, as T = 2 π √(L/g), with g = 9.81 m/s² (yes, irrespective of mass and amplitude, for small swings! This property was very important for timekeeping, using pendulum clocks). #SummerOfPhysics Acceleration (versnelling) measured with #phyphox app from @phyphox

The warmer an object, the more (infrared) radiation being emitted. This is detected by a thermal camera (typ. in the range from 3 to 14µm). Germanium is transparent for this IR (but not in the visible!), making it one of the materials used for #thermal camera #optics. #SummerOfPhysics 20/n

The warmer an object, the more (infrared) radiation being emitted. This is detected by a thermal camera (typ. in the range from 3 to 14µm). Germanium is transparent for this IR (but not in the visible!), making it one of the materials used for #thermal camera #optics. #SummerOfPhysics 20/n

The warmer an object, the more (infrared) radiation being emitted. This is detected by a thermal camera (typ. in the range from 3 to 14µm). Germanium is transparent for this IR (but not in the visible!), making it one of the materials used for #thermal camera #optics. #SummerOfPhysics 20/n

The warmer an object, the more (infrared) radiation being emitted. This is detected by a thermal camera (typ. in the range from 3 to 14µm). Germanium is transparent for this IR (but not in the visible!), making it one of the materials used for #thermal camera #optics. #SummerOfPhysics 20/n

The warmer an object, the more (infrared) radiation being emitted. This is detected by a thermal camera (typ. in the range from 3 to 14µm). Germanium is transparent for this IR (but not in the visible!), making it one of the materials used for #thermal camera #optics. #SummerOfPhysics 20/n

"Water boils at 100°C". Looks like a fundamental 'constant', but it is only true for a specific (atmospheric) pressure. Video of water boiling at about 60°C, using a syringe and some force to lower the pressure. Easier than taking the class to Mt Everest. #SummerOfPhysics #Physics #ITeachPhysics 19/n

"Water boils at 100°C". Looks like a fundamental 'constant', but it is only true for a specific (atmospheric) pressure. Video of water boiling at about 60°C, using a syringe and some force to lower the pressure. Easier than taking the class to Mt Everest. #SummerOfPhysics #Physics #ITeachPhysics 19/n

"Water boils at 100°C". Looks like a fundamental 'constant', but it is only true for a specific (atmospheric) pressure. Video of water boiling at about 60°C, using a syringe and some force to lower the pressure. Easier than taking the class to Mt Everest. #SummerOfPhysics #Physics #ITeachPhysics 19/n

"Water boils at 100°C". Looks like a fundamental 'constant', but it is only true for a specific (atmospheric) pressure. Video of water boiling at about 60°C, using a syringe and some force to lower the pressure. Easier than taking the class to Mt Everest. #SummerOfPhysics #Physics #ITeachPhysics 19/n

"Water boils at 100°C". Looks like a fundamental 'constant', but it is only true for a specific (atmospheric) pressure. Video of water boiling at about 60°C, using a syringe and some force to lower the pressure. Easier than taking the class to Mt Everest. #SummerOfPhysics #Physics #ITeachPhysics 19/n

Water isn’t colourless.
It absorbs longer wavelengths (red light) stronger than shorter ones (blue). If white #light can travel a long distance (deep pool, or in compressed #glacier #ice without scattering air bubbles), mostly blue light will remain. #SummerOfPhysics 18/n

Water isn’t colourless.
It absorbs longer wavelengths (red light) stronger than shorter ones (blue). If white #light can travel a long distance (deep pool, or in compressed #glacier #ice without scattering air bubbles), mostly blue light will remain. #SummerOfPhysics 18/n

Water isn’t colourless.
It absorbs longer wavelengths (red light) stronger than shorter ones (blue). If white #light can travel a long distance (deep pool, or in compressed #glacier #ice without scattering air bubbles), mostly blue light will remain. #SummerOfPhysics 18/n

Water isn’t colourless.
It absorbs longer wavelengths (red light) stronger than shorter ones (blue). If white #light can travel a long distance (deep pool, or in compressed #glacier #ice without scattering air bubbles), mostly blue light will remain. #SummerOfPhysics 18/n

Water isn’t colourless.
It absorbs longer wavelengths (red light) stronger than shorter ones (blue). If white #light can travel a long distance (deep pool, or in compressed #glacier #ice without scattering air bubbles), mostly blue light will remain. #SummerOfPhysics 18/n

@Hashtags @freyablekman 
One more #physicist here! 👋 Now running a thread #SummerOfPhysics on everyday #physics observations and experiments. In case you’re interested ;)

@Hashtags @freyablekman 
One more #physicist here! 👋 Now running a thread #SummerOfPhysics on everyday #physics observations and experiments. In case you’re interested ;)

@Hashtags @freyablekman 
One more #physicist here! 👋 Now running a thread #SummerOfPhysics on everyday #physics observations and experiments. In case you’re interested ;)

@Hashtags @freyablekman 
One more #physicist here! 👋 Now running a thread #SummerOfPhysics on everyday #physics observations and experiments. In case you’re interested ;)

@Hashtags @freyablekman 
One more #physicist here! 👋 Now running a thread #SummerOfPhysics on everyday #physics observations and experiments. In case you’re interested ;)

White objects are actually made of optically transparent, non-absorbing material. They appear white because light is scattered (= changed direction) multiple times due to roughness at the microscopic level. Think of snow ❄️, versus water or air-free ice. #SummerOfPhysics 17/n

White objects are actually made of optically transparent, non-absorbing material. They appear white because light is scattered (= changed direction) multiple times due to roughness at the microscopic level. Think of snow ❄️, versus water or air-free ice. #SummerOfPhysics 17/n

White objects are actually made of optically transparent, non-absorbing material. They appear white because light is scattered (= changed direction) multiple times due to roughness at the microscopic level. Think of snow ❄️, versus water or air-free ice. #SummerOfPhysics 17/n

White objects are actually made of optically transparent, non-absorbing material. They appear white because light is scattered (= changed direction) multiple times due to roughness at the microscopic level. Think of snow ❄️, versus water or air-free ice. #SummerOfPhysics 17/n

White objects are actually made of optically transparent, non-absorbing material. They appear white because light is scattered (= changed direction) multiple times due to roughness at the microscopic level. Think of snow ❄️, versus water or air-free ice. #SummerOfPhysics 17/n

Periodic reminder there’s gravity in space (see map below).
The #ISS #SpaceStation experiences a gravitational pull by the Earth of ~88% compared to the one at sea level. Thanks to its speed (~28000 km/h), this leads to a constant, almost circular fall around 🌍. #SummerOfPhysics #physics 16/n

Periodic reminder there’s gravity in space (see map below).
The #ISS #SpaceStation experiences a gravitational pull by the Earth of ~88% compared to the one at sea level. Thanks to its speed (~28000 km/h), this leads to a constant, almost circular fall around 🌍. #SummerOfPhysics #physics 16/n

Periodic reminder there’s gravity in space (see map below).
The #ISS #SpaceStation experiences a gravitational pull by the Earth of ~88% compared to the one at sea level. Thanks to its speed (~28000 km/h), this leads to a constant, almost circular fall around 🌍. #SummerOfPhysics #physics 16/n

Periodic reminder there’s gravity in space (see map below).
The #ISS #SpaceStation experiences a gravitational pull by the Earth of ~88% compared to the one at sea level. Thanks to its speed (~28000 km/h), this leads to a constant, almost circular fall around 🌍. #SummerOfPhysics #physics 16/n

Periodic reminder there’s gravity in space (see map below).
The #ISS #SpaceStation experiences a gravitational pull by the Earth of ~88% compared to the one at sea level. Thanks to its speed (~28000 km/h), this leads to a constant, almost circular fall around 🌍. #SummerOfPhysics #physics 16/n

The typical drawing of an #iceberg (first image) is physically not possible. It will rotate to a stable position (second image), making it more difficult to pass them safely (#Titanic!). Try it yourself with your own shapes: https://joshdata.me/iceberger.html. #SummerOfPhysics 15/n

The typical drawing of an #iceberg (first image) is physically not possible. It will rotate to a stable position (second image), making it more difficult to pass them safely (#Titanic!). Try it yourself with your own shapes: https://joshdata.me/iceberger.html. #SummerOfPhysics 15/n

The typical drawing of an #iceberg (first image) is physically not possible. It will rotate to a stable position (second image), making it more difficult to pass them safely (#Titanic!). Try it yourself with your own shapes: https://joshdata.me/iceberger.html. #SummerOfPhysics 15/n

The typical drawing of an #iceberg (first image) is physically not possible. It will rotate to a stable position (second image), making it more difficult to pass them safely (#Titanic!). Try it yourself with your own shapes: https://joshdata.me/iceberger.html. #SummerOfPhysics 15/n

The typical drawing of an #iceberg (first image) is physically not possible. It will rotate to a stable position (second image), making it more difficult to pass them safely (#Titanic!). Try it yourself with your own shapes: https://joshdata.me/iceberger.html. #SummerOfPhysics 15/n

The same thin film interference effect is used for lens #coatings (and glasses) to minimise reflection, and to max transmission. As this process depends on the wavelength, it doesn’t work equally well for all colours, leading to slightly coloured glasses. #SummerOfPhysics 14/n

The same thin film interference effect is used for lens #coatings (and glasses) to minimise reflection, and to max transmission. As this process depends on the wavelength, it doesn’t work equally well for all colours, leading to slightly coloured glasses. #SummerOfPhysics 14/n

The same thin film interference effect is used for lens #coatings (and glasses) to minimise reflection, and to max transmission. As this process depends on the wavelength, it doesn’t work equally well for all colours, leading to slightly coloured glasses. #SummerOfPhysics 14/n

The same thin film interference effect is used for lens #coatings (and glasses) to minimise reflection, and to max transmission. As this process depends on the wavelength, it doesn’t work equally well for all colours, leading to slightly coloured glasses. #SummerOfPhysics 14/n

The same thin film interference effect is used for lens #coatings (and glasses) to minimise reflection, and to max transmission. As this process depends on the wavelength, it doesn’t work equally well for all colours, leading to slightly coloured glasses. #SummerOfPhysics 14/n

The colors of #soap bubbles are caused by the thickness of the soap film (~0.0001mm) and the viewing angle. Light, being an electromagnetic #wave, reflects at top AND bottom of the soap film. #interference of both paths enhances/suppresses certain colours. #SummerOfPhysics 13/n

The colors of #soap bubbles are caused by the thickness of the soap film (~0.0001mm) and the viewing angle. Light, being an electromagnetic #wave, reflects at top AND bottom of the soap film. #interference of both paths enhances/suppresses certain colours. #SummerOfPhysics 13/n

The colors of #soap bubbles are caused by the thickness of the soap film (~0.0001mm) and the viewing angle. Light, being an electromagnetic #wave, reflects at top AND bottom of the soap film. #interference of both paths enhances/suppresses certain colours. #SummerOfPhysics 13/n

The colors of #soap bubbles are caused by the thickness of the soap film (~0.0001mm) and the viewing angle. Light, being an electromagnetic #wave, reflects at top AND bottom of the soap film. #interference of both paths enhances/suppresses certain colours. #SummerOfPhysics 13/n

The colors of #soap bubbles are caused by the thickness of the soap film (~0.0001mm) and the viewing angle. Light, being an electromagnetic #wave, reflects at top AND bottom of the soap film. #interference of both paths enhances/suppresses certain colours. #SummerOfPhysics 13/n