Objective lens

I'm wondering why you can't use the following format for entering the length when applying a shape from the Content Center 40'-6 1/2"? It only recognizes in, mm, etc. which really isn't much of an issue until after the part is created. If after the part is created and you later change the length in the parameters to 43'-9 1/2" format instead of 525.5" and then while in the assembly you RMB on the member to "Change Size" it no longer will replace one size for another because it doesn't recognize the new length dimension (see attached). Basically it won't change a member size until you change the length back to just inches.

Taking the example of a magnifying glass, the convex lens is held between the human eye and the subject. To see the subject more clearly, you simply move your hand closer to it or further away. The glass in a magnifying lens is convex, which means it curves outward. This outward curve bends light rays that bounce off the subject and bring them back together, creating a virtual image on the back of your retina, so your eyes see the object as larger than it is.

What does thecoarse focusdo on a microscope

Traditional objectives were refractive in nature. The light is passed through the system and bent by the optical elements. The original microscope used the convex lens closest to the subject to do this. Today’s objectives can use multiple lenses, each with a different task, to achieve the clearest resolution with little to no aberration.

A magnifying glass uses a convex lens to magnify an image or make it appear larger so you can see it better with the human eye. It’s actually the most basic form of a magnifying glass, and it’s an easy-to-understand representation of an objective lens.

Thanks for the reply and that's mostly what I figured was the issue and like I said it really isn't an issue it is just trying to remember that when figuring out why you can't always change the size of a component when 9 out of 10 will. Thanks again.

What does thestagedo on a microscope

Think of the modern objective like a fancy camera lens – which is a photographic objective. It has several working parts within it that provide a better view of the subject matter. In the typical modern microscope objective, different elements are typically printed on the body for easy identification. Look for these following notations:

The CC cut length field can only accept decimal format and not feet and inches.   Yes you change the dimensional values of the part after the component is made but that dialog is unable to format that information.  I think its based on the format of the custom column formula that's associated to the cut length of your structural steel.  However the CC interface was incorporated many years ago and the format of that custom column formula has never changed or that it can't be changed by you.  You may want to see or request this capability in the Inventor Ideas forum (and have others vote on it).

Whatisthepurpose ofthe objective lensinalightmicroscope

Today, we’ve moved way beyond the original Janssen microscope. Objectives in modern microscopes provide real, magnified images from 2x to 200x. They’re much more complicated than the simple convex lens of the past, but their function is basically the same. There are two main types of objectives to choose from, refractive and reflective.

Understanding the elements of the modern objective can help you to select the appropriate tool for your applications. We’ve certainly come a long way since the basic magnifying glass and the original compound microscopes, but an objective is still the lens or series of lenses used to begin the magnification process of a subject.

The Janssen microscope was invented in the late 1500s and consisted of an objective lens at one end of a tube and an eyepiece at the other end. The objective lens was placed above the subject, and the viewer put their eye up to the eyepiece to look through the tube. These two lenses worked in tandem to amplify the image and transmit it to the human viewer’s eye.

Objective lensand eyepiecelensmagnification

Whatisobjective lensinmicroscope

From the magnifying lens and the use of this objective lens came other inventions, including binoculars, cameras, telescopes, microscopes, and more.

In a microscope, the objective lens has much the same function as it does in a magnifying lens. That’s why it’s useful to understand how a magnifying lens works. The very first microscopes are called compound microscopes because they used two lenses. Modern compound microscopes may use two or more lenses.

Reflective objectives use a mirror-based design to magnify and relay the image of the subject. Using mirrors rather than glass, you get higher light efficiency and better resolving power for exceptionally fine details.

Also side note and future postings (when applying images to your posting)..  Please adhere to this recommendation: https://forums.autodesk.com/t5/inventor-forum/embedding-an-image/td-p/7695110

It's believed that the first magnifying glass was created by a scientist named Alhazen in 1021. That invention opened people’s eyes to things they never knew existed before because they couldn’t see them. It’s quite remarkable to imagine people first realizing that the world around them consists of things they cannot see.