All below links will explain you how to build your own optical system in minimum expense and minimum effort without having theoretical knowledge of optics (Physics). It may be a good start to school students to wake up their interest in physics.
How to set up and focus Telescope – a beginner guide
How to turn a telescope into a microscope using a magnifying glass
Some easy ways to calculate focal length of a lens
Homemade cheap view finder for telescope
Author of amty thumb recent is about to stop any longer support to his last plugin. Instead, He has separated images extraction and thumbnail generation portion. He has published a new wordpress plugin, say amtyThumb, which can help people to place thumbnail anywhere on his wordpress site/blog using short code or php function.
To fetch image from specific post. Resize to half.
[amtyThumbOnly percent=50 post_id=282]
To fetch image from current post. Resize by its width.(adjust height automatically)
Resize an image instead of fetching it from any post.
[amtyThumbOnly image_url=http://thinkzarahatke.com/testingimage.jpg percent=50]
Using PHP function instead of short code
amty_lead_img(width,height,1,image-url,percent,zoom or crop,post-id);
Some network doesn't allow images hosted on photobucket, imageshake, or youtube etc. You can use amtyThumb to display an image without resizing.
If you have any query about the plugin fill and submit the below form.
Using font instead of images has many advantages. Like
- Font letters can be re-sized easily without losing sharpness.
- We can change foreground & background color of text.
- We can apply other text decoration to the font.
- Many letters(or symbols) are packed in a font.
- You can show a font character in any style instead of making new request for an image.
- You can use them to generate Captcha