[44585] in linux-announce channel archive
Adventure Awaits: YETI 30 oz Travel Mug - Your Ticket to Refreshment
daemon@ATHENA.MIT.EDU (Stay Refreshed)
Mon Jan 1 04:43:59 2024
Date: Mon, 1 Jan 2024 10:43:29 +0100
From: "Stay Refreshed" <YETIs30@clickdesignspro.today>
Reply-To: "YETI's" <YETIs30@clickdesignspro.today>
To: <linuxch-announce.discuss@charon.mit.edu>
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Adventure Awaits: YETI 30 oz Travel Mug - Your Ticket to Refreshment
http://clickdesignspro.today/IZxUaGBOTtvm6b9QX-Rxsyi58-FTPIJDIyf2JfYCeyfyQddtHg
http://clickdesignspro.today/YS-Lb5cvnsqkUAUz7aHfLlfEJ_9lt-NFpJ8bQS2mYANhQxwj7Q
Claws can be used to interact with rough substrates and re-orient the direction of the force the animal applies. This is what allows squirrels to climb tree trunks that are so large as to be essentially flat, from the perspective of such a small animal. However, claws can interfere with an animal's ability to grasp very small branches, as they may wrap too far around and prick the animal's own paw.
Adhesion is an alternative to claws, which works best on smooth surfaces. Wet adhesion is common in tree frogs and arboreal salamanders, and functions either by suction or by capillary adhesion. Dry adhesion is best typified by the specialized toes of geckos, which use van der Waals forces to adhere to many substrates, even glass.
Frictional gripping is used by primates, relying upon hairless fingertips. Squeezing the branch between the fingertips generates a frictional force that holds the animal's hand to the branch. However, this type of grip depends upon the angle of the frictional force; thus upon the diameter of the branch, with larger branches resulting in reduced gripping ability. Animals other than primates that use gripping in climbing include the chameleon, which has mitten-like grasping feet, and many birds that grip branches in perching or moving about.
To control descent, especially down large diameter branches, some arboreal animals such as squirrels have evolved highly mobile ankle joints that permit rotating the foot into a 'reversed' posture. This allows the claws to hook into the rough surface of the bark, opposing the force of gravity
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<p style="color:#FFFFFF;font-size:8px;">Claws can be used to interact with rough substrates and re-orient the direction of the force the animal applies. This is what allows squirrels to climb tree trunks that are so large as to be essentially flat, from the perspective of such a small animal. However, claws can interfere with an animal's ability to grasp very small branches, as they may wrap too far around and prick the animal's own paw. Adhesion is an alternative to claws, which works best on smooth surfaces. Wet adhesion is common in tree frogs and arboreal salamanders, and functions either by suction or by capillary adhesion. Dry adhesion is best typified by the specialized toes of geckos, which use van der Waals forces to adhere to many substrates, even glass. Frictional gripping is used by primates, relying upon hairless fingertips. Squeezing the branch between the fingertips generates a frictional force that holds the animal's hand to the branch. However, this type of grip depends upon the angle of the frictional force; thus upon the diameter of the branch, with larger branches resulting in reduced gripping ability. Animals other than primates that use gripping in climbing include the chameleon, which has mitten-like grasping feet, and many birds that grip branches in perching or moving about. To control descent, especially down large diameter branches, some arboreal animals such as squirrels have evolved highly mobile ankle joints that permit rotating the foot into a 'reversed' posture. This allows the claws to hook into the rough surface of the bark, opposing the force of gravity</p>
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