May 4, 2022
Hardness and plasticity.
In 1994, big earthshake hit near Los Angeles. It killed 57 people and wound over 5000. Material damage reached 20 billions dollars. Such earthshakes make us think. How hard is the ground under our feet ? What does hardness mean ?
Coal tar pitch seems hard, but it's not. In fact it is very a viscous fluid, i.e it is liquid. The Pitch viscocity is 230 billions times greater than the viscocity of water. The longest pitch experiment is holding at the Cleveland University. In 1927 the pitch was placed in a funnel. Only 9 blops fell for 90 years. Nobody was at the drop. In 1988 experiment keeper John Mattson was close to see the drop. He went out to pour a tea and missed the secret moment.
Another substance that is a viscous liquid is glass. The absence of the crystall cell makes glass still liquid, even when it is in a visually solid state. Precisely because glass is liquid, in the old houses window frame, where windows have been for decades, clearly visible, the glass is thinner at the top than at the bottom. This is due to the fact that the part of glass flowed from top to bottom. That's why in such houses windows rattle in the frames.
Hardness and plasticity don't have absoulute value. In fact all substances are liquid and solid in the same time.
In 1994, big earthshake hit near Los Angeles.
a big earthquake struck near Los Angeles
It killed 57 people and wounded over 5000.
Material damage reached 20 billions dollarsUp to 20 billions dollars of physical damage was done .
The Pitch viscocity of pitch is 230 billions times greater than the viscocsity of water.
Only 9 blops fell for 90 years.
Over 90 years, only 9 drops of pitch fell.
Nobody was at the drop.
Nobody witnessed the pitch fall in a droplet.
In 1988 experiment keeper John Mattson was close to seeing the droppitch fall.
He went out to pour a tea and missed the secret moment.
He went to get a cup of tea and missed the secret moment.
The absence of the crystall cells makes glass stilla liquid, even when it is in a visuallyalthough it appears to be in a solid state.
Precisely because glass is liquidFor this very reason, in the old houses window frame, where windows have been for decades, clearly visible, the glass is thinner at the top than at the bottom.
it can be seen that in the window frames of old houses, the glass is thinner at the top than the bottom when windows have been there for decades.
That's why in such houses windows rattle in the frames.
Hence why in such houses, windows can be heard rattling in their frames.
Hardness and plasticity don't have absoulute value.
Hardness and plasticity do not have an absolute value.
In fact all substances are liquid and solid in the same time.
All substances are in fact a liquid and solid at the same time.
Feedback
Nice work Dima! An interesting read :)
May 5, 2022
Thank you!
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Material damage reached 20 billions dollars.
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Hardness and plasticity. |
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In 1994, big earthshake hit near Los Angeles. In 1994, big earthshake hit near Los Angeles. a big earthquake struck near Los Angeles |
|
It killed 57 people and wound over 5000. It killed 57 people and wounded over 5000. |
|
Such earthshakes make us think. |
|
How hard is the ground under our feet ? |
|
What does hardness mean ? |
|
Coal tar pitch seems hard, but it's not. |
|
In fact it is very a viscous fluid, i.e it is liquid. |
|
The Pitch viscocity is 230 billions times greater than the viscocity of water. The |
|
The longest pitch experiment is holding at the Cleveland University. |
|
In 1927 the pitch was placed in a funnel. |
|
Only 9 blops fell for 90 years. Only 9 blops fell for 90 years. Over 90 years, only 9 drops of pitch fell. |
|
Nobody was at the drop. Nobody was at the drop. Nobody witnessed the pitch fall in a droplet. |
|
In 1988 experiment keeper John Mattson was close to see the drop. In 1988 experiment keeper John Mattson was close to seeing the |
|
He went out to pour a tea and missed the secret moment. He went out to pour a tea and missed the secret moment. He went to get a cup of tea and missed the secret moment. |
|
Another substance that is a viscous liquid is glass. |
|
The absence of the crystall cell makes glass still liquid, even when it is in a visually solid state. The absence of the crystal |
|
Precisely because glass is liquid, in the old houses window frame, where windows have been for decades, clearly visible, the glass is thinner at the top than at the bottom.
it can be seen that in the window frames of old houses, the glass is thinner at the top than the bottom when windows have been there for decades. |
|
This is due to the fact that the part of glass flowed from top to bottom. |
|
That's why in such houses windows rattle in the frames. That's why in such houses windows rattle in the frames. Hence why in such houses, windows can be heard rattling in their frames. |
|
Hardness and plasticity don't have absoulute value. Hardness and plasticity don't have absoulute value. Hardness and plasticity do not have an absolute value. |
|
In fact all substances are liquid and solid in the same time. In fact all substances are liquid and solid in the same time. All substances are in fact a liquid and solid at the same time. |
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