Stuff other people don't write about
This article is a collection of slow-motion videos illustrating basic inline skating moves. For me, slow-motion videos are a way to understand and learn skating moves. I watch them over and over, imitate the movements physically, and keep going back and forth between observation and practice until the movements begin to make sense. This is how I learn, and perhaps it’s how you learn, too.
This is a tutorial on crossovers on inline skates. More specifically, it teaches the “quick feet” version of the crossover, which is actually very similar in principle to running around a circle. This long tutorial begins with some pedagogical monologues on the theory behind crossovers. You can skip the early sections and jump directly to “Side-stepping on grass”.
I’d been searching for skate bags that could comfortably hold the Powerslide Next skates I’d just bought. I fitted them with an Endless 3x110mm frame and large wheels. These big-wheel skates have been all the rage among urban inline skaters for many years now. They’re great for long-distance skating on rough roads.
But these wheel frames were longer and taller than the usual 4x80mm hockey frames I’d skated in the past, such as the ones on my True carbon skates. These hard boots were also taller and bulkier than the hybrid carbon-shell boots, such as the Powerslide Tau, that I’d been skating in for the past three years.
These big-wheel skates did not fit any skate bags in my possession. The Inline Warehouse skate bag that had carried many of my past skates, for instance, couldn’t be zipped up when I squeezed a pair of PS Nexts with big wheels into it.
In this treatise, I show four skate bags, their actual measured dimensions, and whether my monster pair of rollerblades fits inside them.
In this journey, I also discovered a new way to pack big-wheel hard boots. I found that I could nest the two skates at right angles. That makes them fit any of the four bags. But this arrangement generates other issues.
I created the website bachwrotewhat.com two years ago on a whim. My goal was to collect and showcase unaccompanied and modern cello music for the rest of us amateur cellists. As I chronicled compositions in this style that I came across, I also began writing a number of pieces of my own, which I now call “self-accompanied” cello music, inspired by modern and even pop music. In the two years, I have written eight self-accompanied cello pieces. By now, I have long since given up trying to present the original melodies in what I’ve come to call “recompositions.” True to form, all of the original melodic notes are still there, and in many cases the original harmonies and chord progressions survive as well. But once I’ve sketched out a few bars with some new ideas and motifs, I let the recomposition take on a life of its own.
Kūhiō Beach at Waikīkī, along with its two walled ponds, is often misunderstood. It is frequently lumped together with the rest of Waikiki beaches and dismissed as eternally crowded - "like a zoo", as they say. In reality, each beach along Waikiki Bay has its own distinct vibe, shaped by differences in location, reef structure, parking access, and proximity to oceanfront resorts.
Surfers begin gathering at Kuhio Beach well before sunrise, paddling out to Canoes, arguably the most popular surf break along all of Waikiki beaches. Long before swimmers arrive at the walled ponds, surfers are already catching waves on the reef just outside the west pond. Even after sunset, silhouettes of surfers can still be seen braving the break, moving against an ocean painted with the fading afterglow of dusk.
I don't know what Kuhio Beach looks like in summer or during the holiday season, but I can describe what it feels like to stay beside it for a week in November. The experience was noticeably different from influencer videos that highlight midday crowds during peak months. It also felt less touristy than portrayed by websites written by people who have something to sell to you.
I have been taking pictures around Manhasset Bay for quite some years now. Except for a few that I uploaded to Wikimedia as an Wikipedian a decade ago, most have never seen the light of the day. I dusted off a bunch of these and re-processed them. I hope they capture a glimpse of the life around the bay that fictionally separated Jay Gatsby from Daisy Buchanan.
The truth is that many people around the bay have very little idea how their towns look from the water. And those not addicted to examining satellite pictures are often unaware of expansive waterfront properties.
Most water-fronting mansions are shielded from unwanted street views. But all of them are clearly visible from the bay, for obvious reasons. After all, if you can’t see someone’s bedroom window from a kayak, then they can’t see the water either from their bedroom.
The bay comes alive in summer. Sailboats, kayaks and all sorts of watercraft abound. Yacht clubs hold races that draw sailors from all around the bay, and often beyond.
I enjoy writing about things I can’t find online. Here I wrote a snorkeling guide to Hanauma Bay for those of us that must obsessively research before our trips. I wish someone had written one before my trip.
On a windy and rainy day in November, I rented a kayak from Go Bananas, and drove to He’eia Kea Boat Harbor. I launched off towards where I thought the legendary Kaneohe Sandbar would be.
For the entire trip to the sandbar, I paddled alone in a foreboding ocean. Perhaps "bay" is a more accurate description. But from my low vantage point, it looked as if I were in the middle of the wide wide sea under dark clouds. I aimed for Kapapa Island as told. And that was good advice. Because from my kayak, all I could see were breaking waves in every direction, except for that tiny speck of an island in the distance.
I kept turning my kayak back towards the harbor, second-guessing the sanity of my choice. I saw dark clouds pouring rain over entire towns. I pivoted back towards Kapapa Island and paddled some more, all the while frightened to the core and utterly alone.
I reached the last boat in sight, hoping to find tourists having a great time. But it was empty, silent and moored in deep water. No sandbar to be seen. I swung back facing the harbor. I again turned towards Kapapa. I kept going.
After what seemed like a lifetime, I sensed a change in water color. Shortly the sun poked its head out from behind clouds. And magic happened. The sea all around me turned turquoise as soon as sunlight touched them, revealing that I was merely a foot above the sand now. I got why this place is also known as the Sunken Island.
In the year 2025, there are plenty of resources online that answer the question: why does my snorkel mask keep fogging up? Before my 2025 trip to Hawaii, I consulted numerous YouTube videos and Reddit discussions on this topic. Chiefly I wanted to avoid repeating my sub-optimal snorkeling experiences from the 2015 cruise trip and the 2009 trip to Trunk Bay and Caneel Bay. One regrettable aspect of these past trips was that I couldn’t stop my lenses from fogging up when snorkeling, despite having done what I perceived to be adequate preparation.
Not surprisingly, today’s online resources are actually worse than in 2009 and 2015. Blogs with insightful resources have gone dark, long replaced by either inaccessible tribal social media, or exceedingly-short clickbait clips tailored to today’s audience. Chiefly the latter peddles quick fixes showing the “hows”, but not the “whys”. The thing is, lens-defogging, like most things in life, follows Tolstoy’s law – that every happy family is alike, but every unhappy family is unhappy in its own way. There’s a long list of things that each alone can fog up your lenses. You need to remediate each and every one of them, to get to the “happy path”.
During my 2025 trip, I finally attained defogging nirvana. I experienced crystal-clear views from my mask for two hours of snorkeling at Hanauma Bay, for the first time in my life. Nobody had told me that this was the norm for snorkeling. One shouldn’t have to stand up on shallow reef mid-snorkeling to address fogs, ever. Until I had this experience, like countless new merrymakers all around Waikiki, I did not regard having to deal with fogging every 5 minutes as anything unusual.
Delta 650 took off from runway 8R at Daniel K. Inouye International Airport due East at 5:15pm local time. Our pilot seemed to have made a point of banking the aircraft to trace the southern coast in the first 4 minutes of the flight to afford those seating on the left side a great aerial view of Sand Island, Honolulu downtown, Ala Moana, Waikiki, Kaimana, Diamond Head, Kahala, Hawaii Kai, Hanauma Bay, and Koko Head. Then the plane turned East again and flew towards the mainland.
Unlike the JFK arrival video I recorded, I was able to recognize all landmarks as I looked out of my window seat. This is largely due to my month-long research into Oahu before our trip to the island. But still, I figured I would write a post showing these famous Hawaiian landmarks. Here is the recorded video.
I've always chosen window seats on flights whenever I could. And I never grew tired of watching my plane take off and land. Possibly I am just fascinated with flying, whether it involves model airplanes, computer simulations, or actual planes. But with only a few exceptional landmarks, I could almost never identify in realtime what the plane was flying over. It amazes me that I can't recognize locations that should be familiar to me where I've driven by countless number of times.
The truth is that aerial views often looks quite different from ground views. Even though I kept thinking that I could mentally reconstruct a god's eye view of my neighborhood, every landing proved me wrong. And my last trip was no exception. As I the plane readied itself for landing, I looked out of the window and couldn't tell where the plane was. I put my phone against the window pane for the first time, and recorded the entire landing path.
I played the clip backward at home, and fired up Google Maps with Globe View to rotate its map to match the window view of the terrain. Painstakingly I retraced the flight path backward from runway 22L. This turned out to be the quickest way to reconstruct the landing path. In doing so, I've joined a bunch of nerds like Joseph Gunn who document, among other thing, flight paths. In fact, I consulted one of his blog posts on flight patterns to confirm landing paths at runway 22L.
As a postscript to Big Wheels on Carbon Hockey Skates, I mentioned that I discovered Powerslide Reign Ares 100. They look like carbon hockey skates. Yet they're equipped with Trinity mounts for big wheel configurations, such as 3x110mm. These skates seemingly disproved my assertion that "you simply can't buy skates with big wheels on full-bodied, carbon hockey shells - they don't exist".
I bought a pair of Reign Ares, heat-molded them, and skated on them. I've examined them, and pondered on the internal structure of these skates for a week now. I've done all I could, to divine how they are made, short of cutting my new skates up. I can confidently say that, "they are no carbon hockey skates".
But I love them. I think they are the best answer to my quest to find big wheels on carbon (almost) hockey skates. This long post documents my journey to customize and set up Reign Ares. I turned them into the right big-wheel skates for me, for urban marathons such as Wednesday Night Skate NYC.
A few weeks ago I set out to write a short article on my quest to get Big Wheels on Carbon Hockey Skates. I organized pictures taken during the quest for illustrations. And I realized there were enough materials to address all topics on which I found no information online, during my quest.
So here is the first installment, on what exactly are carbon-fiber inline skates. How many types are commercially available. How your foot actually feel when you put them on. And how they are made.
I’ve been skating for a while on inline hockey skates with four 80mm wheels. These are normal-sized wheels popular since decades ago. These skates are great for urban skating on paved streets, skating on bike trails, skating at an outdoor rink, slalom skating around cones, and doing two-foot wizard skating moves.
But they are no good for marathon skating like folks do at Wednesday Night Skate NYC. So I set out to get myself a setup with three 110mm wheels. But it turned out that nobody makes carbon-fiber hockey skates that can take wheels bigger than the usual 80mm. So I had to compromise and make modifications to commercially-available skates, in order to mount big wheels on them.
The availability of skateable trails on Long Island is pitiful, compare to that in New York City. Despite having a much larger landmass, Long Island features very few publicly-accessible trails with paved and clean surfaces. To wit, click on the follow image to look at biking trails and bike-friendly roads in Nassau county compared to NYC, Queens and Brooklyn.
But not all biking trails and bike-friendly roads are suitable for inline skating. Some trails go significantly uphill and downhill - a challenge for beginner skaters. Some trails are not regularly maintained, and are full of debris that can trip an oblivious rollerblader. Furthermore, sharing a road with actual traffic is not something an inline skater would normally do.
For street hockey rinks and skateparks near Nassau, including some locations from Queens, head to the article on Public Skateparks on Long Island.
Outside of these parks, there are actually a few nice biking trails near Nassau that are relatively usable for inline skaters. You can find these trails on the Long Island Bikeways & Trailways map, published by the department of transportation.
You know UV rays from the sun burn your skin and damage your eyes. So you apply sunscreen and put on sunglasses before you head out. Sunscreen bottles usually come with an SPF number (Sun Protection Factor). But your sunglasses usually carry no indication of its effectiveness. When your sunscreen fails, you know right away within the hour – simply look at your skin. But when you wear sunglasses that fail to block UV rays from reaching your eyes, you only find out years later, after your ophthalmologist tells you that you have already developed cataracts, and suffered cornea and/or other permanent damages.
How do you know your sunglasses actually block out all UV rays? The best and the safest way is to walk into your local eyeglass store. They will usually check your sunglasses for UV protection, for free. It takes only a few minutes.
But you are reading this article. So obviously that isn't how you roll. You want to check and confirm that your glasses block out UV rays, on your own, in the comfort of your own home. Following picture illustrates the basics of a procedure for just that.
As mentioned previously in Playing Bach Cello Suite 1, I picked up cello playing seriously again, after two decades of neglect. For months now, I've playing with great enthusiasm the first suite of unaccompanied cello music from Bach. In the process I discovered a general lack of music written for an unaccompanied solo cellist.
There is a lack of knowledge about multi-voice-sounding music written for a single cellist to perform. I am talking about music that delivers a full-range audio experience through the use of arpeggios (broken chords), double-stops, and the like commonly found in Bach's cello suites.
For two decades I've kept a year-end routine starting after Thanksgiving, lasting through Christmas, and usually ending shortly after New Year's Eve. I would take my cello out of the closet, and dust it off. I would practice for a few hours every two days, building up calluses anew. I transcribed Bach Cello Suite 1 …
I've always wondered about the slot car craze of the 70'. I heard so much about it. But I never did understand its lure. Unlike RC flying, slot car racing provides a racer with only one degree of control. You go fast, or even faster, until your slot car derails, and flies off a track.
After I bought a starter kit recently, I now appreciate why classic slot car racing can be a hobby, and not just a toy. I get that at the enthusiast end of the spectrum, die-hard collectors and racers build elaborate custom tracks and cars. I know that at the toy end of the spectrum, cheap slot car kits are available for $30 to keep toddlers entertained.
But the majority of potential customers for slot cars do not belong to either end of this spectrum. There is a reason why slot cars soon faded from the popular stage. Most casual users find the experience thrilling only for a brief moment. After an initial adrenaline rush, the game soon become repetitive and one-dimensional for casual users.
I have some ideas about what to do, with respect to issues I raised. I will talk about them at the end of this article. But first, I'll document some of my experiences that you won't find elsewhere online. Some of these pertain to a particular brand of HO-scale slot cars and tracks I bought. Some have to do with lack of accessories for casual racers such as myself. I modeled and 3D-printed these missing accessories. Readers with similar tracks and cars may download my 3D models, and print them on their own printers.
This is part 2 of a series on Mabrouk. In this part I describe in excruciating details the four slalom components of Mabrouk previously summarized in What is Mabrouk: a slalom variant of Grapevine. I learned to skate a sustained Mabrouk by first practicing the four slalom components, and by connecting them with rudimentary transitions. I later refined these transitions to make the entire Mabrouk sequence flow, but that is for part 3 and beyond of this series.
Mabrouk is a slalom variant of the figure skating move called Grapevine. The Grapevine skating pattern is described and diagramed as early as 1880 by Vandervell and Cox in "A System of Figure-skating". The slalom version is presumably named after Swiss slalomer Eddy Mabrouk. Both Mabrouk and Grapevine employ the same exact 4 components, namely forward/backward criss-cross, and forward/reverse eagle.
While Mabrouk emphasizes curved patterns traced around equal-spaced cones forming a straight line, Grapevine strives to have the skater move in a streamline without giving explicit thoughts to slalom components. The difference can be seen in patterns they trace on the ground as presented below.
Asian Americans who bike or skate know that helmets sold in America are generally not shaped properly for Asian heads. This is a phenomenon alien to most non-Asian people. Lately some brands have come out with so-called "Asian Fit" models. After an extensive research, I think these are just hot air, except for possibly a few exceptions.
Wednesday Night Skate NYC is also known as WNS NYC. It's one of several well-established groups in the city. Some say it's the biggest group of them all. WNS is run by volunteers since the late 1990s. Every Wednesday from April to October, weather permitting, organizers show up wearing yellow-green vests at the south-side steps of Union Square around 7:45pm. By then a sizable crowd of skaters have already gathered at the steps. At 8pm an organizer gives a brief safety speech and introduces the route planner of the week, as even more skaters materialize all of a sudden at the steps. One organizer is appointed the leader of the day, and another the sweeper of the day. Folks are told not to skate ahead of the leader. The sweeper makes sure to leave no skater behind. Shortly after, skaters launch like a swarm of giant locusts, to descend upon the streets of New York City at dusk. The leader signals followers to take breaks at pre-designated stops along the route, so that the rest of the group may catch up, with the sweeper being the last person to arrive at each stop. The route circles back to Union Square, where a day's skating concludes.
Slalom bladers practice at a well-paved area behind Mist Garden at Flushing Meadows Corona Park in Queens. The surface of Mist Garden is quite smooth for inline skating as well, when it's not spewing fog and mist. You will find Mist Garden right next to the Unisphere which skateboarders and bladers alike have also turned into a skating rink.
Some of us argue that skating consists of repeated cycles of falls and recoveries. Specifically, a skater deliberately moves her upper body such that shifted center of gravity causes her to "fall". During this fall, she continues to glide on one skate. But at the same time she moves her other skate, the free skate, towards the projection on the ground of her shifting center of gravity, with the aim to recover from the fall by planting the free skate onto the new projected center of gravity. The process now repeats, with the free skate becoming the gliding skate.
If this fall and recovery sound like walking… well, it is walking, but with a special skating gait. In the sequence shown, the skater leans to the left while gliding on his left skate. He is about to fall to the left, but during the fall he moves his right skate, the free skate, over to his left side. He catches his balance at the last second, by planting his right skate on the projection of his shifted center of gravity.
Since the pandemic of 2019, I’ve been regularly inline skating at Eisenhower Park after work. In these last two years, I’ve seen a large number of new skaters show up with a box of new skates at the park. They put on their new inline skates, and struggled around for a while. Most tried to walk around the rink by holding onto handrails at the outermost track. The brave tried to skate and fall. Very few approached me to ask for advise.
So a large number of first-time newbies showed up every week. But I almost never saw them a second time. Perhaps they went to a new park to skate. Perhaps they didn’t hang out around the rink after getting their footing, so to speak. But I suspect that a majority of them gave up.
This article is for those who attempt to learn to inline skate. This article is what I wished someone had written for me, when I was just learning to skate.
Eisenhower Park is one of the few places in Nassau County where an inline skater can practice at an outdoor rink when honing one’s skills, and then stroll leisurely on wheels along scenic trails when just hanging around with friends and family. The rink is accessible all year round, and you will see people there every day. However, skating at the rink in winter months is only for the most determined folks. This article is not about a skatepark with street and transition elements, but I include it as a honorable mention as a part of my Public Skateparks on Long Island series.
What is the equivalent mass fraction of a 5M saline solution?
A 5M molarity NaCl solution is equivalent to a salt-water solution prepared at mass fraction of 24.53 wt%.
When you leave a saturated NaCl salt solution in a glass cylinder, what happens when water dries up? Likely you thought cubic salt crystals would form at the bottom of the glass, and then grow bigger as water evaporates. You have this mental picture perhaps from reading a textbook, or maybe watching an animated video. Eventually only salt crystals are left in the cup. Well, that's not wrong. But that is also not the full story.
Rockaway Skatepark in Queens was destroyed by Sandy. It was rebuilt, then reopened in 2020. This new and large facility features butter-smooth surface at the writing of this article, with both street and transition elements, plus a long bowl which connects with the main skating plaza. Rockaway Skatepark is located at the west end of Rockaway Beach. The new boardwalk passes next to the skatepark. And the Atlantic Ocean is just 200 feet away. Its sister Far Rockaway Skatepark is located at the east end of the same beach, 3.5 miles away. This article is a part of my Public Skateparks on Long Island series.
Oyster Bay Skatepark features both street and transition elements, plus three connected bowls. Despite the name, this skatepark is actually located at Bethpage, not Oyster Bay. In fact, it's part of the Bethpage Community Park, which is not far away from the huge Bethpage State Park. This article is a part of my Public Skateparks on Long Island series.
Manorhaven Beach Skatepark features both street and transition elements. There is a raise platform in the middle of the plaza, with traffic flowing around this platform. At the time of this writing, it is the only public skatepark on all of North Shore Long Island. This article is a part of my Public Skateparks on Long Island series.
Long Beach Skatepark features both street and transition elements, plus a large bowl. It is located between an outdoor hockey rink and the Municipal Boat Launch Ramp. This article is a part of my Public Skateparks on Long Island series.
Kennedy Skatepark is officially named Jarred A. Newallo Skatepark. It is located in the Town of Hempstead, in Nassau County. This article is a part of my Public Skateparks on Long Island series.
Maloof Skatepark is a 16,000 square-foot facility within Flushing Meadows Corona Park in Queens. It features street and transition elements on three levels. This article is a part of my Public Skateparks on Long Island series.
Far Rockaway Skatepark in Queens is a 15,700 square feet facility featuring both street and transition elements. It is located at the east end of Rockaway Beach. Its sister Rockaway Skatepark is located at the west end of the same beach, 3.5 miles away. This article is a part of my Public Skateparks on Long Island series.
Canarsie Skatepark located in Brooklyn stands out among other skateparks in Long Island, in that it features a perimeter trail around the main skate plaza. Various ramps and obstacles are scattered along this trail, making cruising this trail a unique experience for inline skaters. This article is a part of my Public Skateparks on Long Island series.
Astoria Skatepark is located right under the Triborough Bridge. It is a 21,500-square-foot installation with transitions on three levels of surfaces including concrete and bricks. For inline skaters, there are also paved trails around the Astoria Park, and an entire shoreline street closed to motor vehicles for bikes and skaters.
There are lots of "best skateparks on Long Island" articles online. Many are written by newspaper folks who didn't skate. They probably gathered random bits and pieces of information elsewhere to hand in an assignment. Some are made by websites for the purpose of showing you ads after you click on their click bait titles. Some write about skateparks accessible only to local residents. A few are written by reputable thrasher sources. But none of them have extensive pictures showing what each publicly-accessible skatepark has to offer, with accompanying videos. I intend to fill in this gap.
This is a follow-up to my previous article: Learn to Skate the Two-foot Grapevine Analytically from 2016. The first article talked about skating Grapevine on ice. This article discusses how to skate the same Grapevine on inline skates. Almost everything from the first article applies to this article. Thus this article will not repeat the same prerequisite skills and context information about Grapevine that I already covered in the first article. This article will focus on showing differences found when skating this move on pavement, compared to ice.