Shop now Shop now Shop now See more Shop all Amazon Fashion Cloud Drive Photos Shop now Learn More Shop now DIYED Shop now Shop Fire Shop Kindle Shop now Shop now Shop now
Profile for thomas li > Reviews

Personal Profile

Content by thomas li
Top Reviewer Ranking: 7,071,893
Helpful Votes: 7

Learn more about Your Profile.

Reviews Written by
thomas li

Show:  
Page: 1
pixel
An Introduction to Modern Cosmology, 2nd Edition (Physics)
An Introduction to Modern Cosmology, 2nd Edition (Physics)
by Andrew Liddle
Edition: Paperback
Price: £23.49

2 of 2 people found the following review helpful
4.0 out of 5 stars an excellent introduction to cosmology, 9 Nov. 2011
Having used this book for a 3rd year physics course on cosmology, I can say that it is a wonderful introduction to the subject for physicists or anyone with an interest in cosmology.

The book carefully guides you through all the basic topics, in enough detail and rigour to keep physicists happy, in a way that is easily understandable to most people who have a basic understanding of calculus, but with a conversational tone (compared to most textbooks anyway) that keeps the reading fairly light and interesting. The lengths of the book also helps in this respect, as it is not very thick.

I liked the logical flow of the chapters, leading you from basic ideas of topology to the friedman equations to some of the more advanced ideas about the early universe.

The book is not the be-all-end-all of cosmology text books, as it is only an introduction and skirts briefly over some of the more advanced sections, but if you are looking for an introduction to the subject I have not found a better one!


Hori Fighting Stick V3 (PS3)
Hori Fighting Stick V3 (PS3)

1 of 1 people found the following review helpful
4.0 out of 5 stars good value stick, 9 Nov. 2011
This is an excellent fighting stick for someone on a tight budget who perhaps can't afford some of the more expensive sticks on the market.

The build quality of the stick is very good, I've only been using it for a few months and it feels like it can take years of abuse. The actual stick and buttons are made in house by hori, and are not quite as good as some of the more expensive parts from sanwa or seimitsu, but they still manage to do an admirable job. The buttons are responsive, a little more sticky than sanwa buttons, but some players may prefer this. The stick feels quite loose, which lends itself well to quickly chaining combos on games such as SSF4, but does require a great deal of precision. I haven't noticed any input delay with this device.

The unit has a decent enough weight, enough to sit comfortably on your lap without moving too much, if you are looking for a heavy beast of a control stick you aren't going to find it here; but for most players the weight is an ideal trade of between comfort and stability. The cable length is fine for small to medium size living rooms; you aren't going to be able to sit miles away, but by then you are going to find it hard to see the screen, unless you have eagle eyes. I do wish there was a compartment so the cable can be stored away when not in use, but this is a minor complaint.

A quick word on modding. If you are looking replace the buttons in the future, be warned that they are attached to a separate circuit board, so some soldering skills may be required, but the board can be thrown away as it is not attached to the main board and it looks like a fairly easy job. There also looks to be holes installed on the underside of the stick so an octagonal gate can be installed or the stick replaced.

All in all, I am very pleased with the product. I find it's no-nonsense grey scale looks very appealling, it offers excellent bang-for-buck value for fighting game enthusiasts. With the option of upgrading parts with minimal fuss in the future and excellent build quality, it's a stick that will serve you well for a long time.


Premium HDMI to DVI Cable Gold 2 Metre (discontinued by manufacturer)
Premium HDMI to DVI Cable Gold 2 Metre (discontinued by manufacturer)
Offered by Zehui Trading
Price: £2.55

5.0 out of 5 stars simple, cheap, no hastle., 9 Nov. 2011
This product does exactly what I want it to do, send the picture from a PS3 to an older HD television without an HDMI input. Product is exceptional value, cable quality is of a decent thickness, had no problems with any intereference or noise. No audio sent, but that is the limitations of DVI, nothing to do with the product, just be warned that you will need to send the audio to an external amplifier or reciever, so you might need separate audio cables.

If you are looking for a solution for an older HD television, then do not hesitate to buy this product, there's no need to spend the money on more expensive HDMI cables or adaptors, they will not improve the picture quality (digital is digital, bits is bits).


Sennheiser RS 170 Closed Digital Wireless Over-Ear Headphone
Sennheiser RS 170 Closed Digital Wireless Over-Ear Headphone

4 of 5 people found the following review helpful
3.0 out of 5 stars decent, if flawed, headphones., 19 Oct. 2011
The RS 170s are at heart, a good pair of wireless headphones; but have some flaws that make it an annoying pair of cans, and annoying is bad, very bad.

Let's start with the positive. The build quality of the RS 170s is fine, the plastic doesn't feel flimsy at all. To my eyes The 170s are an attractive looking pair of headphones, and sit well on the head, unlike a lot of other headphones that I have tried. If this sort of thing is important to you, the dock/transmitter is also not too much of an eyesore.

The 170s are also very light and comfortable, I didn't experience any wearing fatigue, however the cushioning around the ear can get a little bit sweaty after a while. Battery life seemed fine to me, and I was happy with the range. The isolation was so-so, not enough to block out the sound of someone using the radio nearby, but enough to mute an average conversation.

What about sound quality? The 170s are generally good, not the last word in detail, but a smooth, pleasant sound, that makes for easy listening. The treble didn't amaze me, it was just a little too rounded off, but for most films/games/casual listening it's perfectly adequate. The bass extension was good, the bass boost button was a little bit too bloated for music, but worked very well with movies. The mids are the 170s strongest point, slightly forward, they offer a full sound that handled complexity without ever getting cluttered. The soundstage was pretty poor, but you can't really expect it be be brilliant from a pair of closed cans. Basically, these headphones offer the same sound quality as other sennheiser headphones that cost around half their price, but in fairness what we're really paying for the freedom of wireless.

Ok, so far so good? now here's where things started turning sour for me. The minute I turned these headphones on I noticed a buzzing sound coming out of the right earpiece. The buzzing is feint enough to be ignored when listening at medium-high volumes, but at lower volumes or quiet part music and films the buzzing becomes very noticeable and extremely irritating. I'm not sure if this is due to interference (although the kleer technology spiel promises to be interference free), or the product I received being faulty, or if it's simply an unavoidable noise that the headphones have to make in order to work. Anyway, this is annoyance number 1, and basically makes the headphones unusable for me.

As other reviewers have stated, I also noticed the drop out at during quiet parts of films and music, which only exacerbated my annoyance of the buzzing sound. (Also please note, that no amount of fiddling with the attenuator button seemed to fix this). This is annoyance number 2.

My third gripe with these headphones is less of a critical one, and more of a design subtlety. It doesn't seem to make any sense to me why there is no digital input into the transmitter box. For somebody who plays games on a PS3 and listens to music via an ipod dock with digital out, it seems crazy that I have to turn on a DAC in order for the RS170 to convert the analogue back into digital in order to broadcast it.

Anyway, to conclude, if you are made of sterner stuff than I, and can put up with the drops outs and buzzing, these are a good pair of wireless cans; maybe not for critical listening of music, but for games and films they do the job very well. The annoyances are just a deal breaker for me, I have a low tolerance for this sort of thing and I find that it generally spoils the experience, which is not cool, especially at this price point. So for me, I think I'm going to return these, and just stick with some decent wired cans and an extension cable.


Page: 1