Sundials and water clocks are as old as civilization. Mechanical clocks - and, with them, the word "clock" - go back to 13th century Europe. The spinning earth is a clock. A dividing cell is a clock. Radioactive isotopes are clocks. So the origin of clocks is a question not for history but for physics and there the trouble begins.
You might innocently think of clocks as things that tell time, but according to both of the pillars of modern physics, time is not something you can measure. Quantum theory describes how the world changes in time, but time itself is in tangible. Einstein's theory of general relativity goes further and says that time has no objective meaning. The world in fact does not change in time; it is a gigantic stop clock. This freaky revelation is known as the problem of frozen time.
George Musser, "Scientific American", September 2009, p. 80.
Exercise |
Web Page - Filename |
Status |
|---|---|---|
| Hands-on Practice 2.1 | hello.html | Completed |
| Hands-on Practice 2.2 | heading.html | Completed |
| Hands-on Practice 2.3 | heading2.html | Completed |
| Hands-on Practice 2.4 | heading3.html | Completed |
| Hands-on Practice 2.4 | heading4.html | Completed |
| Hands-on Practice 2.5 | blockquote.html | Completd |
| Hands-on Practice 2.6 | definitionlist.html | Completed |
| heading5.html | Completed | |
| heading6.html | Completed | |
| Hands-on Practice 2.8 | design.html | Completed |
| Hands-on Practice 2.9 | index.html | Completed |
| Hands-on Practice 2.10 | index.html | Completed |
| recipe.html | Completed | |
| Working with Visual Elements | asg4new.html | Completed |
| Hands-On-Exercises 5.1 | sitemap.jpg | Completed |
| Hands-On-Exercise 5.2 | wireframe.html | Completed |
| Hands-On-Exercises 5.3 and 5.4 | designweb.html | Completed |
| Hands-On-Exercise 8.1 | 8.1services.html | Completed |
| Hands-On-Exercise 8.2 | 8.2services.html | Completed |
| Hands-On-Exercise 8.3 | newindex.html | Completed |
| Midterm Project | index.html | Completed |
| Hands-on-Practice 3.1 | inline.html | Completed |
| Hands-on-Practice 3.2 | embedded.html | Completed |
| Hands-on-Practice 3.3 | embedded2.html | Completed |
| Hands-on-Practice 3.4 | embedded3.html | Completed |
| Hands-on-Practice 3.5 | embedded4.html | Completed |
| Hands-on-Practice 3.6 | external.html | Completed |
| Hands-on-Practice 3.7 | index.html and services.html | Completed |
| Hands-on-Practice 3.8 | index2.html | Completed |
| Hands-on-Practice 3.9 | external.html and color.css | Completed |
| Hands-on-Exercise 8a | advantage.html | Completed |
| Hands-on-Exercise 8b | disadvantage.html | Completed |
| Hands-on-Exercise 8c | ex3.css | Completed |
| Hands-on-Exercise 8e | advantage2.html and disadvantage2.html | Completed |
| Hands-on-Exercise 8f | advantage3.html | Completed |
| Hands-on-Exercise 9 | advantage4.html and validate.html and | Completed |
| Hands-on-Exercise 6.1 | box1.html | Completed |
| Hands-on-Exercise 6.2 | trillium_asg11.html | Completed |
| Hands-on-Exercise 6.3 | floatyls.html | Completed |
| Hands-on-Exercise 6.4 | splash.html | Completed |
| Hands-on-Exercise 7.1 | favorites.html | Completed |
| Hands-on-Exercise 7.2 | link1.html and link2.html | Completed |
| Hands-on-Exercise 7.3 | threecolumn.html | Completed |
For everything there is a season,
a time for every activity under heaven.
A time to be born and a time to die.
A time to plant and a time to harvest.
A time to kill and a time to heal.
A time to tear down and a time to build up.
A time to cry and a time to laugh.
A time to grieve and a time to dance.
A time to scatter stones and a time to gather stones.
A time to embrace and a time to turn away.
A time to search and a time to quit searching.
A time to keep and a time to throw away.
A time to tear and a time to mend.
A time to be quiet and a time to speak.
A time to love and a time to hate.
A time for war and a time for peace.
