Evan's Space

Wonders of Physics

About

This simple and humble blog is dedicated to the students learning GCE O-Level Physics or Science Physics. It consists of various contents like Physics comics, summary, questions and video tutorials or demonstrations. Hope it will be useful to some of you.

If you have any suggestions on what kind of content which might be helpful for students to better understand and learn Physics, please feel free to let me know. I would like to hear from you. Thank you.

As the blog posts are in chronological order, if you prefer to search by topics and questions listed out in order, you may use the other Wix site:

http://evantoh.wixsite.com/evantoh

Any post you click of the Wix site will be linked directly to the WordPress site. It will be easier to search the content from the Wix site. Hope this helps.

YouTube Chanel – Evan’s Space

https://www.youtube.com/@evantohspace/

86 thoughts on “About”

Leave a comment

  1. sam gibbs
    January 5, 2014 at 2:58 AM

    Hello Evan….i am amazed and delighted by the work you do and want to compliment you on this amazing blog…..the best i have seen ever.

    Reply
  2. anonymous
    March 23, 2014 at 1:09 PM

    Thank you for sharing your knowledge and setting up this blog that will benefit a lot of people. I really love your blog and I think is very beneficial. This is the most wonderful and useful blog I have ever seen. I really thank you. 😀

    Reply
    • evantoh
      March 24, 2014 at 7:19 AM

      Thank you for viewing my blog 🙂

      Reply
      • Z
        September 17, 2022 at 10:27 PM

        Hi, firstly, awesome job with all the drawings!. I attended your sharing during SISTC 2019 and have since remembered this site. May I have your permission to share your blog site with my students? I think they’ll really appreciate the bite size work that you have done. Your posters are simply marvelous. Thank you.

      • evantoh
        September 18, 2022 at 7:56 AM

        Hi Z! Thank you for viewing my blog! Of course u r free to share with your students if u find the content useful. Likewise if u have any suggestions of new content u hope to see do let me know too. Thank you!

  3. anonymous
    April 9, 2014 at 4:51 PM

    The notes u drew are very nice and easy for revision. 🙂 I wonder what did u use to draw those notes…

    Reply
  4. catherine
    April 9, 2014 at 5:10 PM

    Hi, I came across your kinematics summary notes. is so nice.. but may I know is there any easier way for us to view the graphs? Like how do we identity which graph is increasing deceleration/decreasing deceleration? This kind of qns is quite confusing. Thanks

    Reply
    • evantoh
      April 9, 2014 at 6:11 PM

      Are you clear about gradient in math graph? As in the summary, describing the motion using concept of gradient is the easiest way. If u know what kind of gradient in math it will be easy

      Reply
      • catherine
        April 10, 2014 at 8:36 PM

        Yes. But then I am not sure which graph in the summary is representing a graph with increasing deceleration/decreasing deceleration and what is the diff between negative increase and positive increase.

      • evantoh
        April 10, 2014 at 9:12 PM

        It’s a bit difficult to explain through text. To answer your question briefly, in general the gradient of velocity time graph will tell you directly the acceleration or deceleration. If the gradient is getting steeper it is considered increasing (may it be positive or negative gradient) and vice versa.

      • evantoh
        April 10, 2014 at 9:18 PM

        Positive increasing acceleration its because the gradient is positive (slope upwards, speed increases) and the gradient is getting steeper.
        Negative increase is when the gradient is negative (sloping downwards, speed decreases) and the gradient is getting steeper. Roughly get the idea??? 🙂

      • evantoh
        April 10, 2014 at 10:38 PM

        Hi Catherine, I uploaded an image which hopefully can help u. Take a look and let me know ya

  5. catherine
    April 12, 2014 at 7:32 PM

    Hi, I have taken a look and I understand now. Thank you! So, for example of a velocity/time graph, the steepness shows whether is increasing/decreasing while the direction of the curve shows whether is accelerating/decelerating.

    Reply
  6. Peter Wiles
    January 11, 2015 at 2:26 AM

    Evan. I teach high school physics in Toronto, Canada and I love your site. Great energy, great explanations and great illustrations. I will recommend your site to my students.

    Reply
  7. Mr Thou
    July 7, 2015 at 9:52 PM

    Hi Evan,

    While wandering in the vast land of Google, I bumped into your blog. Really interesting and impressive concept drawing.
    Want to add a link to your blog at my website. Wondering if you are okay with that?

    Reply
  8. Isaac
    September 10, 2015 at 11:39 PM

    Thank you, I love physics now. Bless Isaac Newton.

    Reply
  9. Bryan
    March 26, 2016 at 11:39 AM

    Hi Evan. I am a teacher of science in Colombia, Latinamerica. I would like to refeer your work, but I can not do it with just your blog. Can you email me to talk about your impact on my students? Thank you. EMAIL: mibavendano@alianzaeducativa.edu.co

    Reply
  10. Mr Dave Sim
    February 4, 2017 at 12:05 PM

    Hi Evan, I am a teacher in Singapore. Can you please contact me at mrdavesim@gmail.com? Thank you so much.

    Reply
  11. Robyn Basson
    June 21, 2018 at 3:09 AM

    Hi Evan. I am a teacher in South Africa. You are so very talented! Well done!

    Reply
  12. beng
    November 25, 2018 at 6:23 PM

    hi Evan, I was looking for Physics Posters to put in class for N and O levels revision and I found your page.
    The layout and the idea was what I wanted to do years ago but I lacked the technical expertise and professional will to build up such elaborate archives content.
    May I seek your permission to print your posters to be hung in my classes for revision purpose.
    Thanks

    Reply
  13. Matthew Montamat
    December 1, 2018 at 11:58 PM

    I found your Wave comic a few years back and I have loved it. I have tried to create similar comics on different science subjects. Unfortunately they are like sand castles as I draw them on a white board and erase them when we change subjects. I’m recently back to teaching Physics and starting a unit on waves. Your comic will be the centerpiece of my wave unit. Thanks!

    Reply
  14. Bell
    December 18, 2018 at 1:39 AM

    Hi Evan, I would like to use one of your drawings. Please contact me at xiao3yu2@gmail.com regarding copyright issue. Thanks!

    Reply
  15. Ziyi
    August 13, 2019 at 10:36 AM

    Hi Evan, this is Ziyi here. I would like to use two of your drawings for our Physics lessons. Would like to ask you for copyrights issues and wondering if we can print them out as posters as we credit it to you. you can contact me at li_ziyi@moe.edu.sg.

    Reply
  16. Yan
    October 14, 2019 at 6:54 PM

    Hi Mr Toh, I am a secondary 4 student and your page has saved my grades tbh thank you so much

    Reply
    • evantoh
      October 14, 2019 at 8:27 PM

      Hi Yan! Thank you for viewing my blog. I’m thankful and humbled that it has helped you. But I’m more impressed by you. The fact that you take charge of your learning and put in effort to learn from available resources out there is commendable. And more importantly, you bother to write in to thank me. Continue with the positive attitude and gratefulness in life. All the best Yan!

      Reply
  17. José Carlos Silva Santa Cruz
    January 2, 2020 at 10:42 PM

    Parabéns Evan, são muito boas as explicações e resoluções no campo da física. Ótimo trabalho.

    Reply
  18. Kin Chuah
    January 14, 2020 at 9:14 AM

    Hi Evan, thank you for your selfless sharing. This is so beautifully done.

    Reply
  19. Baoli
    February 16, 2020 at 1:59 AM

    Was looking for answer for the tape timer thing the and chanced upon this blog. The voice of the video sounds familiar and i looked at the name again and realised that it is you. Thank you for your sharing your blog! 🙂

    Reply
  20. Mohammad sikander
    April 23, 2020 at 1:36 AM

    Hi
    I am electronics lecturer and glad to visit your blog. You are so creative. Thanks for such colourfull explanation.
    Really interesting and impressive concept drawing.
    Want to add it into my video lecture. if you are okay with that?

    Reply
  21. 4E1'12
    August 22, 2020 at 3:51 PM

    Hi Mr Toh!

    Glad to see Pi alive and kicking! Can’t believe your illustrations have continued through the years and gotten so professional now! Reminiscing your amazing Physics lessons looking through them hahas ❤ How are you now?

    @danry @kaikang @kaijun @daniel
    P.S. your kids damn cute sia

    Reply
  22. Stephen
    September 1, 2020 at 8:17 PM

    Hi Evan,

    Please could you send me your contact details at stephen.roberts@resourcegroup.co.uk

    Kind regards

    Stephen Roberts

    Reply
  23. marianne leong
    December 21, 2020 at 11:11 AM

    Hi, i am impressed with all the amazing artwork that you did for your students. Can you tell me what you used and how you did those artwork, like all of the pictures, infographics, comics, and diagrams, and posters.

    From
    Marianne Leong Jia Ern

    Reply
  24. Yi Qiao
    January 12, 2021 at 2:09 PM

    Hello! This is really impressive! can you share what app/software you use to draw these infographics?

    Reply
  25. Alshaima
    January 14, 2021 at 2:22 AM

    Hello I am a student in my last year school. I have a question in lenz’s law, I would like if you replied to me in email.

    Reply
  26. seetheworldwithjali
    February 13, 2021 at 9:38 AM

    Dearest Evan,
    Thank you for helping!

    Reply
  27. frank crouch
    March 3, 2021 at 10:07 PM

    very helpful well presented . thanks

    Reply
  28. omu
    April 25, 2021 at 10:58 PM

    What’s your inspiration in physics?

    Reply
  29. Emily Ashford
    May 6, 2021 at 5:11 PM

    Hi Evan, I was wondering if I could have your permission to cite your work for my physics assessment in Harvard style, please? If so could you please send me the details via email? Thanks!

    Reply
    • evantoh
      May 6, 2021 at 8:04 PM

      Hi Emily, I have emailed you. Anyway, of course you are free to cite my work if you need. I’m honoured and glad they are of use to you. Thank you!

      Reply
  30. Nia
    May 7, 2021 at 5:32 PM

    You work is so amazing. It helped me a lot for my exams

    Reply
  31. Sara
    July 23, 2021 at 4:52 AM

    Hello – I create online safety courses for scientists and engineers at JPL. Can I use your images in my classes?

    Reply
  33. Rexi
    August 19, 2021 at 9:46 AM

    This is a world class learning resource. Thanks for keeping it online.

    Reply
  34. tangent
    September 25, 2021 at 8:47 PM

    hi mr toh this is actually insane and it helped me understand alot more about the topics ! appreciate the hardwork put into this

    Reply
  35. tangent
    September 26, 2021 at 2:49 PM

    hello sir toh im back. ure really an inspiration to me. phys now my fav subj !! thanku sir toh evan

    Reply
  36. Pris
    May 6, 2023 at 5:22 PM

    Hi Mr Evan
    My child really likes your notes and the way you explained the concept. Do you give tuition?

    Reply
  37. rodrigoalcarazdelaosa
    May 18, 2023 at 1:57 PM

    Hi, Evan. I’d really appreciate if you could give me some contact information to propose something to you.

    I tried the chat you have in the Wix site but got no response.

    Thank you very much in advance.

    Looking forward to hearing from you,

    Rodrigo

    Reply
  38. Tomy World
    July 29, 2023 at 7:18 PM

    Hi Evan, great effort! I’m sure it benefits and really helps a lot of students in understanding those physics concepts with your colorful, yet details explanations. Wonderful work and selflessness contribution.

    Reply
  39. Hi Leng
    September 23, 2023 at 6:01 PM

    Hi, can i trouble you to explain 2013 paper 1 Q40

    Reply

Leave a comment