Video

Thank you very much

Thank you very much. I use Blender.

@@tec-science 👍 great sir

Kirchhoff's law of thermal radiation states that for a body in thermal equilibrium, emissivity is equal to absorptivity. However, real-world materials, especially perfect reflectors or special cavities like those in MRI machines, deviate from the ideal blackbody behavior. A perfect reflector does not absorb or emit radiation, it reflects it and therefore does not behave like a blackbody. Resonant cavities in MRI machines are designed to maintain specific resonant frequencies and high quality factors, which means they interact with radiation differently than a blackbody. Kirchhoff's statement that "the radiation is independent of the walls" is an idealization. In practice, the material properties of the cavity walls affect the radiation characteristics. Ideal blackbodies are a theoretical construct, and real-world deviations exist. The soda can in the video is used as a simple illustrative example and does not capture these complexities.

Vielen Dank für die lobenden Worte, freut mich wenn die Arbeit wertgeschätzt wird und vor allem der Inhalt auch praktisch genutzt wird!

Ich danke dir für das Lob!

Danke für das Lob! Freut mich wenn das Video wertgeschätzt wird ...

These are different reference frames from which you are arguing. The statement that B does not move with respect to A is from the point of view of a rotating reference frame. The statement that B moves with 2ωr is from the point of view of a translational reference frame that moves tangentially to A.

Thank you 🙏🏽

You're welcome

Habe ich vorerst (noch) nicht geplant. Ich werde es mir aber notieren.

Freut mich zu hören!

This is just a notation I use to make the difference between a result and a condition clear. "=" ultimately means "is the result of something" and "=!" means "is a condition that we presuppose".

Each point on the gear is ultimately a superposition of the movement of the centre of gravity (which is the same for all points considered) and the rotational movement. The gear, and therefore the rotation, moves with the centre of gravity and not with the circumferential speed. The linear speed distribution (shown in blue) is thus shifted to the right by the amount of the centre of gravity speed. In fact, if the gear itself did not rotate around its center of gravity, which means that a marked tooth on the gear would always be at the 12 o'clock position as the center of gravity moves on a circular path, then every point on the gear would actually move at the same speed, regardless of the radius. The speed at each point on the gear would be the speed of the center of gravity.

@@tec-science Isn't Vc (at the center of gravity of the planet gear) equal to Nc (angular velocity of carrier) times the distance between the center of carrier arm and the center of planet gear? In the same way, will the velocity not vary throughout the planet gear (I am talking only about the velocity due to rotation of carrier arm. The velocity indicated in green colour in the video)?

I think I understand your problem. But the linear velocity distribution of the planet gear has its center of gravity as its reference. The linear velocity distribution is related to this center of gravity. If this center of gravity now moves with the velocity vc (velocity of the carrier), then the entire linear velocity distribution is superimposed by this velocity vc. The entire linear velocity distribution is shifted by this amount. Therefore, the velocity vc is added to the entire velocity distribution regardless of the radius considered on the planet gear.

@@tec-science I understand your explanation. You have superimposed the velocity due to rotation of planet gear due to its rotation about its center of gravity (blue velocity vectors)and the velocity due to the velocity of the center of gravity itself. However, will not the velocity Vc be constant (green velocity vectors) throughout only if the gear was moving in a straight line? In this case, the planet gear is undergoing revolution about the carrier center, not translation in a straight line. So, the green velocity distribution should also linearly vary (instead of being constant, as shown in the green distribution). Please correct me if I am wrong.

czcams.com/video/MQ9EwtqR9gU/video.html I think your mistake is that when you superimpose the movements where the planet gear is initially assumed not to rotate, you think that the planet gear is firmly locked to the carrier. However, with this assumption, the planet gear rotates once around itself with each revolution of the carrier (this false assumption leads to the coin rotation paradox). When it is said that the planet gear does not rotate while the carrier rotates, this means that, for example, a marked tooth on the gear that is at the 12 o'clock position is there for the entire rotation (see the animation in the link). There is no linear speed distribution, but the planet gear has a constant speed along its entire diameter (shown in green).

β refers to the rotation of the planet gear when the sun gear is stationary. Now, however, the movement of the sun gear is superimposed on this and turns the planet gear backwards, so that the planet gear now effectively covers the angle 𝝳.

Gern geschehen!

On my website you will find several articles on the subject of fluid mechanics. I can't say when I'll get around to making a video about this. But it will certainly take some time.

I have already created a video on the subject of undercutting: czcams.com/video/bol1U0BHcew/video.html I hope this helps.

Das freut mich!

You're welcome!

like I said: czcams.com/video/bol1U0BHcew/video.html

Thank you!

Danke für das Lob!

I'm glad you asked, otherwise I wouldn't have looked into this wonderful operating principle.

Thank you very much!

Vielen Dank!

🙏🏽

Thank you for the appreciation, indeed a lot of work. 🙏🏽

Danke. Ja, da hat sich in den letzten Monaten einiges getan was die KI Stimmen angeht

@@tec-science Der Inhalt war natürlich auch wieder klasse. Kannte die Formeln nur im Englischen als Capstan-Equation, hier im Video als Anwendungsfall für spiellose Robotikgetriebe: czcams.com/video/MwIBTbumd1Q/video.htmlsi=w7pkTpvG_K86YctR&t=853

Danke 🙏🏽

See the video "Undercut of Gears"

I use Blender

... You mean like in centrifugal governor?

@@tec-science Yes...centrifugal an inertial governors...like Protell, Hartnell, etc

@@tec-science Yes...centrifugal and inertial governors....Hartnell, Proell, etc.

Thank you 🙏🏽

Thank you so much for your kind words! 😊 I really appreciate your support and encouragement. It's viewers like you who make all the effort worthwhile.

Thank you for the congratulations and for watching the video! I'm glad you enjoyed it. 😊 Unfortunately, I can't help you with Stata.

your're welcome 😊

Thank you. The formula should be correct because you need 2 times the tooth head plus the diameter of the reference circle.

Vielleicht wirst Du fündig im Video zum Verformungsprozess: czcams.com/video/oB5GpN_ESzU/video.html